AK is situational.
In Hold'em, ANY hand can be beat...whether it be AKo, AKs, AA, or even junk hands like J2.

TPTK can be hard to play, at least for me. Depending on how big my stack is, I may or may not have called his all-in. Is it worth risking TPTK for a weak two pair or even trips? Depends on who you're up against.

Based on what you're saying, though, I would've called his all-in.