"15/7/2 over about 200 hands" qualifies as more than "not much of a read"

That said, this is a standard call anyway. Two taggs, no bets on the flop, he's not putting you on all that much strength even with the turn raise. He could still have QQ, JJ, TT, AdQd or just think you're completely full of it since you didn't bet the flop.