I see, yeah I can understand the logic in calling a 3bet now - although yes I realise the 3bets at this level are (well, according to PT3) around 8%, that still gives me like a 55/45 advantage.

And I know his point wasn't entirely to use JJ to set mine, there's a high chance i'll be an overpair to the board, and still ahead of his range. Yeah I think I get it now, that's cool. Thanks for spending the time to write such a detailed response - I really appreciate it.