two pair hand

Villian is a 16/10 regular. After the hand he typed into the chat box that he had AT. Do you believe him?

Party Poker No-Limit Hold'em, $ Hero (6 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

MP ($38.30)
CO ($123)
Button ($107.50)
SB ($72.45)
Hero ($129.39)
UTG ($124.05)

Preflop: Hero is BB with 4, 5. SB posts a blind of $0.50.
UTG raises to $4, 1 fold, CO calls $4, Button calls $4, SB (poster) calls $3.50, Hero calls $3.

Flop: ($20) 4, A, 5 (5 players)
SB checks, Hero bets $18, UTG folds, CO calls $18, Button folds, SB folds.

Turn: ($56) Q (2 players)
Hero bets $45, CO calls $101 (All-In), Hero folds.

Final Pot: $202

I don't think 16/10 calls raises with AT.

I think your hand is bigger than he thinks (what's he think of you?) and likely he puts you a draw or soemthing that he thinks you can fold.

His play seems pretty consistent with AQ but that may be the only likely hand in his range your behind. Hard for me to give him AA, QQ, 44, or 55 here. I hate these spots. 4 to 1 ish. I'd call.

i was really confused. he was a standard tag, so i just couldn't see him taking this line with AK. i folded because i wasn't convinced 4:1 was good enough.