NL100: Did i lose alot of value here?

Sorry for posting this in shorthanded. but wth, its poker.

Villain has played 4 hands, posted out of the blinds. Not fullstack.

Thats what i know about him

In the heat of the moment i felt like villain was feeling pot committed here and would play atc to showdown, should i have used my position here?

Full Tilt No-Limit Hold'em, $1.00 BB (8 handed) - Full-Tilt Converter Tool from FlopTurnRiver.com

UTG ($109.10)
UTG+1 ($100.25)
MP1 ($171.25)
MP2 ($33.20)
Hero (CO) ($100)
Button ($101.15)
SB ($107.25)
BB ($65.60)

Preflop: Hero is CO with A, K
4 folds, Hero raises to $3.50, 1 fold, SB calls $3, BB raises to $10, Hero calls $6.50, 1 fold

Flop: ($23.50) 9, 4, K (2 players)
BB bets $22, Hero raises to $89.50, 1 fold

Total pot: $67.50 | Rake: $3

He had about 33$left

i mean, he had 32 in and 34 back so your reasoning seems fine and its suprising he folded. that said, i would probably relax and let the money go in on his accord since i have position and a massive equity advantage vs almost all worse hands in his range.