Villain's river play any good?

[istewart]

Villain is a FTP regular. I'll give his name if anyone cares. He's likely a winner but too aggressive in dumb spots.

He checkraises ace-high flops pretty liberally in general.

Full Tilt Poker $3/$6 Limit Hold'em - 6 players
Hand Converter Tool from DeucesCracked.com

Preflop: Hero is MP with K[img]/images/graemlins/club.gif[/img], A[img]/images/graemlins/club.gif[/img]
UTG folds, <font color="#FF0000">Hero raises</font>, CO folds, SB folds, BB calls.

Flop: (4.50 SB) 4[img]/images/graemlins/spade.gif[/img], A[img]/images/graemlins/diamond.gif[/img], 8[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
BB checks, <font color="#FF0000">Hero bets</font>, <font color="#FF0000">BB raises</font>, Hero calls.

Turn: (4.25 BB) T[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
BB checks, <font color="#FF0000">Hero bets</font>, BB calls.

River: (6.25 BB) T[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
BB checks, <font color="#FF0000">Hero bets</font>, <font color="#FF0000">BB raises</font>, Hero calls.

Final Pot: 10.25 BB

Results:
<font color="#FFFFFF">
Hero shows Kc, Ac (two pair, Aces and Tens).
Button doesn't show.
BB shows Qs, 9c (a pair of Tens).
Outcome: Hero wins 9.75 BB.
($3.00 Rake)
</font>

Obviously it doesn't look great, but I thought I was smoked on the river by either diamonds with a ten or complete air (on the flop) with a ten. Is his play any good? (Not vs. my specific hand, but vs. my range.)