AK on river, am i overthinking this one?

[steaknshake925]

i was on kind of a rush on another table playing HU, so no reads on villain.

Party Poker No-Limit Hold'em, $ BB (6 max, 10 handed) converter

MP3 ($980)
CO ($192.5)
Button ($980)
SB ($677.3)
BB ($965)
UTG ($843)
Hero ($1394)
UTG+2 ($985)
MP1 (villain)/ ($1006.5)
MP2 ($360)

Preflop: Hero is UTG+1 with A[img]/images/graemlins/diamond.gif[/img], K[img]/images/graemlins/heart.gif[/img]. SB posts a blind of $5.
<font color="#666666">1 fold</font>, <font color="#CC3333">Hero raises to $35</font>, UTG+2 calls $35, MP1 (villain)/ calls $35, <font color="#666666">2 folds</font>, CO calls $35, <font color="#666666">3 folds</font>.

Flop: ($155) A[img]/images/graemlins/club.gif[/img], 3[img]/images/graemlins/diamond.gif[/img], Q[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(4 players)</font>
Hero checks, UTG+2 checks, villain checks, CO checks.

Turn: ($155) 8[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(4 players)</font>
<font color="#CC3333">Hero bets $125</font>, UTG+2 folds, villain calls $125, CO folds.

River: ($405) T[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">villain bets $200</font>

comments on all streets appreciated. on the river, is this an easy call here? at the time i thought it seemed like a 2pair value betting the river. i figured lesser aces were all checking behind and cant really see what i can beat besides a bluff. thanks.