I don't think you understand where the threshold is for the 25% or 1% or whatever category you're talking about.
Here are the income split points (AGI) and the average tax rate paid by each from 2005:
1% - $364,657 - 23.13%
5% - $145,283 - 20.78%
10% - $103,912 - 18.84%
25% - $62,068 - 15.86%...