AK played too weakly?

[AlphaWice]

Is this a mistake?

10+1

Table Table 11654 (Real Money)
Seat 1 is the button
Total number of players : 8
Seat 1: Deltamike64 ( $1505 )
Seat 2: UofM333 ( $755 )
Seat 3: SulcideKing ( $770 )
Seat 5: marinastr ( $700 )
Seat 6: RickyTP ( $1615 )
Seat 7: suncity814 ( $765 )
Seat 8: ortizz34 ( $1030 )
Seat 9: Hero ( $860 )
Trny:15930493 Level:2
Blinds(15/30)
** Dealing down cards **
Dealt to Hero [ Kh Ac ]
marinastr folds.
RickyTP folds.
suncity814 folds.
ortizz34 folds.
Hero raises [100].
Deltamike64 folds.
UofM333 folds.
SulcideKing calls [70].
** Dealing Flop ** [ 9c, 7s, 3d ]
SulcideKing checks.
Hero checks.
** Dealing Turn ** [ 6h ]
SulcideKing checks.
Hero bets [65].
SulcideKing calls [65].
>You have options at Table 10918 Table!.
** Dealing River ** [ Qd ]
SulcideKing checks.
Hero checks.
SulcideKing shows [ Js, Ts ] high card queen.
Hero shows [ Kh, Ac ] high card ace.
Hero wins 345 chips from the main pot with high card ace.

[splashpot]

I'd probably bet 3/4ths of the pot on the flop. If he calls, I'd check/fold unless I hit an A or K.