I'm guessing that a big raise on the river means that he hit his boat, but the fact that most decent villains bluff the river at 100NL enough to make the hero 4 bet shove a realistic option. Tough spot to be in, though. I dont think your bet sizing was terribly bad, however. You stayed just shy of the thirty percent rule, and a laydown here would not be a horrible play.

However, IMAO villain is only repping the quad tens or the full boat that came with the river Queen. He would have played a set of fours or sixes more aggressively. I think villain's HUD stats would tell you if he is a legitimate river blufffer.