The problem with this poll is that it's not taking into account different salary levels of different countries.
You'll probably find that a large % of the people voting 150k plus don't stay in the USA and with the weak dollar that just makes it worse.
BTW in the UK there was a program about how much Britain earns on approx 1 month ago.
you had to earn £46k to be in the top 10% of earners.
Now if you polled for what % salary do you earn compared to the list price of the M3 in your country
50% of list
100% of list
150% of list
200% of list
300% of list
You'd probably find a lot less people that earn 3 times list of the car compared to $150k as there are quite a few non USA members and the car costs double or more in some countries