Your 3-bet is to small, but folding JJ to that action behind is ok without reads. Unless the players in the blinds are really bad, you are going to be against QQ+, AK most of the time, and then JJ does not have enough equity. As is said again and again: Dont be results oriented. Both opponents showing up with AK blocking each others outs is the absolute best case scenario for you and does not mean, folding was wrong. You are not Mike Postle, who knew his opponents cards and could therefore call with 65 offsuit in a similar spot.
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