Why 4-bet calling sucks: you already put 5$ in the pot, with 15$ behind. An all-in means paying 15$ for a 40$ pot, so you only need 37.5% equity:
Text results appended to pokerstove.txt
349,310,016 games 0.005 secs 69,862,003,200 games/sec
Board:
Dead:
equity win tie pots won pots tied
Hand 0: 63.587% 63.39% 00.20% 221421192 693396.00 { QQ+, AKs, AKo }
Hand 1: 36.413% 36.21% 00.20% 126502032 693396.00 { TT }
If he shoves a pretty tight range, its very marginal. Given he may shove AQ (or some bluffs) its even money.
More important: if you 4-bet/fold, your hand is not relevant anymore. You can do this with a hand like 72o - either you get the pot preflop or you fold. However, TT is way to strong to be played like a bluff. Hence, call and see a flop is better.