I can't speak for the Conti's. I have 28k on my PS2's and expect to get another 2-5k out of them. I would think one would get better tread wear with the Conti's as the PS2's are more of a performance tire which = poorer mileage.

Edit: Oops, I spoke relying on my common sense (big mistake on my part). I just did a comparison using TireRack as a source between the Conti's, PS2's and Eagle F1's. The tread wear results:

1st place, Eagle F1's - 7.9
2nd place, PS2's - 7.6
3rd place, Conti's - 6.7