I think it's a pretty trivial fold as opposed to call. But whether a shove is profitable is the interesting point here. His range that may fold is AK, AQ, 44, 55 and KQ imo (in order of likelyhood/combinations imo). His range that won't fold is TJcc and KJcc as said previously.
I think this player is capable of folding all sets and 2prs, even with the 3:1 price on the end (disclaimer: maths copied from beanie). This is easily enough to make the shove profitable, so long as he folds this portion of his range.
hmm
1) I think this is only a trivial fold with the reads, insight into opponents strategy and knowledge of how he views hero.
2) Sets and 2 pairs are hard to make, and if he only has to be good 25% of the time (and I might be bad enough to have AQ) who says he's folding.
3) IF he is folding those hands (which are all the hands we put him on) then even if he can have KJcc and JTcc that's still what about 8:1 combos wise of folds to calls. So it's not even 'close' to a good shove it would be super duper sexy time profitable. IF he's not opening those two frushes then we should just be jamming this river every time laughing to ourselves.