Dude... you are absolutely right that any PP is a favorite against any non-pair pre-flop. But as you've noticed, there a couple of gaps in just stopping there...
1) If they're willing to all-in PF w/ AJ or AQ, you can bet they're willing to go in with pretty much any PP. So you gotta at least stick the higher pps and (if they're following your original logic...) almost all of them if they think YOU might shove w/ AK, AQ, AJ etc. You're equity goes down hill really fast once you start widening their range...
2) The other problem is you got 5 cards to go... and only 2 outs (pretty much...) to improve. That's why raising PF w/ small pp is okay, but if the flop comes AKT, you'll prolly be re-thinking the shove on your 33 -- which you can, 'cause you haven't already committed your chips.
3) And finally, even if you could narrow your villain to only calling AI PF w/ AK ... nothing else, ever... you will come out ahead over the long term shoving any pp HU pre-flop. However... that's long term... as you'll lose your stack 47 times to the 52 you win it. That's a sh1tload of variance...

Just some other thoughts... oh yeah, and wb