This is 5th hand, no reads. Opp is a winning player across a very small sample size (so it's most likely not relevant). Shove or check behind here?

PokerStars No-Limit Hold'em Tourney, Big Blind is t20 (9 handed) Poker-Stars Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

Hero (t1500)
MP2 (t1280)
MP3 (t1270)
CO (t1500)
Button (t1470)
SB (t1630)
BB (t1500)
UTG (t1720)
UTG+1 (t1630)

Preflop: Hero is MP1 with A, A.
2 folds, Hero raises to t80, MP2 calls t80, MP3 calls t80, 1 fold, Button calls t80, SB calls t70, 1 fold.

Flop: (t420) 4, J, 2 (5 players)
SB checks, Hero bets t400, MP2 folds, MP3 folds, Button folds, SB calls t400.

Turn: (t1220) J (2 players)
SB checks, Hero ????