Alcohol is alcohol. The differences you are noticing are probably due to the amount of water you're consuming with your alcohol (two pints of 5% beer contains a lot more water than one pint of 10% beer), how fast you're drinking (some liquors you shot, some you sip for example, sweeter drinks get drunk faster than bitter drinks), and possibly also related to the amount of sugar you consume (as is common in sweeter mixed drinks).
I could go on listing other substances in alcoholic drinks, but ethanol is far from the only substance in alcoholic beverages with biological and psycholical impact.
