Please explain why we "3bet JJ from any position".

Call with JJ in position would be my preferred approach vs. this villain.

If villain was REALLY loose leaving a continuation range that we are ahead of then I am ok with it.

In this case, I would contend that 3-betting will adjust villains range unfavorably for us folding out alot of hands we beat (22-99, KJ/AJ, sc's, etc.) and leaving us up against a tight range (1010+,AK+).

Any merit to a 1/2 pot river bet? We could potentially get value from 66,99,1010,87s,98s,A8,AK (no way villain has Q here)?