Is this a hero fold? » Medium Stakes No Limit Discussion

villain runs 27/5. I don't want to 3b the hand because he is opening so tight. On the river, with the board pairing my plan was to c/c, but then he bets less than 1/2 pot, so I value raise putting him on AK or AA. He re ships and im getting 5.4:1. Is this a fold?

Full Tilt Poker NL Hold'em - $2/$4 Ring (6 handed)

Starting Stacks:
Seat 1: SB ($828)
Seat 2: BB (Hero) ($400)
Seat 3: UTG ($812.20)
Seat 4: LP ($436)
Seat 5: CO ($417.40)
Seat 6: BTN ($479.90)

Preflop: Hero is BB with


3 folds, BTN raises $14, 1 fold, Hero calls $10

Flop: ($30) - 2 players

Hero checks, BTN bets $20, Hero calls $20

Turn: ($70) - 2 players

Hero checks, BTN bets $40, Hero calls $40

River: ($150) - 4 players

Hero checks, BTN bets $70, Hero raises $200, , BTN all-in $405.90, , Hero folds

Final pot: $547 ($3 rake)

Yeah, I see this as a pretty standard hand.  I do agree that raising the river WAS the right play, but unless he is some kind of a maniac, this should be a pretty easy fold I think.