If you get it heads up they can only have at most 2 over cards (by my calculations) So if they hold AK and the flop comes Qxx or Jxx, you still have the best of it. You can't shy away from TT or JJ just becuase it might not be the powerful overcard after the flop. You're out flopping two overs 2/3 of the time. And again, my point with AKs is if it doesn't hit on the flop, what's its value? You're in the same spot with AKs and a flop that misses you as you are with TT and a flop with an overcard.

-'rilla