Comment Makes sense to me (Score 1) 371
It actually sounds quite likely to me, and makes sense a bit. If you go by the stereotypes you've got:
Safari: Mac users, i.e. not a huge amount of brains but lots of cash, easily duped, faithful.
MSIE: Windows users, i.e. stupid, plus they're using the browser that came with their machine and is known for poor security, so not tech-savvy at all, Joe Public make be lower income.
Firefox: Linux users, i.e. more intelligent, possibly not as much disposable income. If its Windows FF then more brains than MSIE users.
Chrome: see Firefox, plus could be smartphone users so tech-savvy possibly business people and higher income.
Opera: well who uses Opera these days, very niche, so possibly used to paying more for things. Could be smartphone users so tech-savvy possibly business people and higher income.
These are pretty stereotypical (and I expect I sound like an arsehole) but I expect that's what the ratings are based on, not scientific research.
I agree its very naughty to bias, but I wouldn't put it past the credit industry.