Not to be flip, but I haven't found that MasterCard or Visa are particular great at data analysis. Additionally, I would be surprised if MasterCard could easily figure out the information you suggest from the data they get. I could be completely wrong, but I've seen them have enough trouble figuring out interchange charges -- their core business -- let alone random analytic facts about (so-called) competitors.
To my immediate recollection ISO 8583 (the standard set out for credit card transactions) doesn't have much info on independent sales organizations (a different ISO acronym). This is all to say that the transactions are through a merchant account set up by Stripe for each particular merchant at Wells Fargo Merchant Services, then through First Data and only then hit MasterCard. Again, I'm not certain, but I'm not sure its a question they can easily answer from their data.
To my immediate recollection ISO 8583 (the standard set out for credit card transactions) doesn't have much info on independent sales organizations (a different ISO acronym). This is all to say that the transactions are through a merchant account set up by Stripe for each particular merchant at Wells Fargo Merchant Services, then through First Data and only then hit MasterCard. Again, I'm not certain, but I'm not sure its a question they can easily answer from their data.