A longer diagonal does not imply a larger screen with variant aspect ratios. To compare two screens based on their diagonal is fine if they have the same aspect ratio and I have no problem with ads doing just that, but this here is utterly unacceptable. There is no weaseling out of this. You cannot redefine screen size as diagonal length, that makes no sense with variant aspect ratios.
I’m also not really aware of such brain-dead comparisons being widespread in ads and official documents. Sure, it’s an easy enough mistake for consumers to make (especially since the diagonal is used so often in ads, even if not in comparisons), but if companies make that mistake, than that’s stepping over the line. By a mile.
There is nothing acceptable about this. Nothing at all.
(I can believe that this was a honest mistake, some intern screwed up or something. Shit happens. As I said, it’s easy to assume that the diagonal tells the whole story. So I would definitely not jump to the conclusion that this is some evil plot – but I cannot fathom how anyone can honestly belief that this is somehow defensible and might be in any way acceptable if it were not a honest mistake but intentional.)
It is just the way it is (currently) done - displays are compared by the length of their diagonals, aspect ratio is ignored. Which consumer has an idea what 291 cm² vs 281 cm² of screen area means? Which customer distinguishes between 32" 16:9 and 32" 16:10? No one does that. Everybody has an idea of the size of his 10" tablet - nobody even cares if it is 10", 10.1" or 10.2" let alone the aspect ratio - his 17" notebook and his 42" TV and that is what they use for rough comparisons. As far as consumers are concerned display size is diagonal length.
So by giving the two numbers 9.7" and 10.1" they gave away all information consumers will look at. What are the alternatives? Not giving the numbers? Not good, consumers want to know display sizes. Adding the aspect ratios 4:3 and 16:9? Nobody cares to calculate what that implies. They could have left out the sentence saying that the 10.1" display is larger, but every consumer reading 10.1" and 9.7" already decided on their own that 10.1" is bigger.
So yes, this is not scientifically accurate, but good enough for consumers. And the few percent that care about 10 cm² more or less and resolutions or pixel densities - both not given in the add - are able to figure out the details on their own.
Where are the ads that actually call a screen that is not actually larger larger based on its diagonal? Most companies do not dare to step over that line. Because it’s wrong and all kinds of fucked up. Oh, sure, they might call a screen that is actually larger (but not quite as much larger as its diagonal might imply) larger and present the diagonal in big letters. But calling something that isn’t larger larger? WTF?
I’m sure consumers are often confused – but not because companies are actively calling something larger that actually isn’t.
I think you are very confused about what’s happing here and you seem to have serious issues separating consumer misunderstanding and companies lying. One is sad, the other is evil and has to be called out. And loudly. There is no weaseling out of this. This isn’t even a tiny little bit ok maybe if you squint. This just is not ok. (But, again, I’m not sure there is any intent here. Maybe it was just a stupid mistake.)
Besides that most consumers will just look at the table and never read the small sentence next to the link to the shop, what is the difference if you omit the statement? Consumers will see 9.7" and 10.1" and say that 10.1" is larger. What if you add another row with aspect ratios next to diagonal lengths? Consumers will still say that 10.1" is larger. Adding or removing the sentence makes no difference because as far as consumers are concerned display size is diagonal length and not display area.
What do you suggest, how should the add be modified? As stated above, just omitting the statement makes no difference, the customers will just conclude that the 10.1" display is the larger one. Should they add something like »Our tablet has a larger display diagonal but due to the different aspect ratios the display area is actually a 3.5 % smaller«? Leave out the display sizes in the first place?
So in my opinion leaving out the statement makes you not really that much more honest because the numbers just imply the statement for consumers. You have moved from saying something wrong (if you insist that display size is has always to be interpreted as display area and not diagonal length) to not telling the whole truth and letting the consumer make a wrong conclusion. Omitting the display sizes is not really an option. What remains is requiring them to add statements to the add that explicitly name weaknesses of the product and this is completely against the purpose of an add.
I have another idea - rewrite the statement to read »[...] has a larger display diagonal than [...]« instead of »[...] has a larger display than [...]«. What will consumers read? Of course, »has a larger display«. Now it is a true statement but still misleading.
A longer diagonal does not imply a larger screen with variant aspect ratios. To compare two screens based on their diagonal is fine if they have the same aspect ratio and I have no problem with ads doing just that, but this here is utterly unacceptable. There is no weaseling out of this. You cannot redefine screen size as diagonal length, that makes no sense with variant aspect ratios.
I’m also not really aware of such brain-dead comparisons being widespread in ads and official documents. Sure, it’s an easy enough mistake for consumers to make (especially since the diagonal is used so often in ads, even if not in comparisons), but if companies make that mistake, than that’s stepping over the line. By a mile.
There is nothing acceptable about this. Nothing at all.
(I can believe that this was a honest mistake, some intern screwed up or something. Shit happens. As I said, it’s easy to assume that the diagonal tells the whole story. So I would definitely not jump to the conclusion that this is some evil plot – but I cannot fathom how anyone can honestly belief that this is somehow defensible and might be in any way acceptable if it were not a honest mistake but intentional.)