This spot is almost entirely read dependent. If you had reads or HUD stats that UTG opens wide from EP or UTG+1 likes to 3b from these positions then I would certainly cold 4b. Unfortunately you are completely readless in this rush tournament. While both players are showing strength, we can certainly cold 4b bluff blockers if we are not expecting to be flatted often. I am a fan of bluffing with the top of your folding range so if you are normally folding JJ here then you could turn it into a bluff with the intention of folding to further action vs both players. 4betting this hand has the added benefit of being able to call off the BB, SB, and MP1 shoves with good equity. With that said, AK, Ax, and KQ are better 4b bluffing hands than JJ because they have more blockers to QQ+. AK is the best hand to 4b bluff if you do not plan to call off either player because it has the most blockers. 

A cold 4b is marginal at best from these positions in a 3r where players are unlikely to understand 3b and 4b bluffing preflop. QQ+ and AK are clear cold 4bs with the plan to GII with either player KK+ and both players with only AA. With reads we could 5b call QQ and AKs, but without reads KK+ seems standard. If we were to 5b call wider than KK+, we should definitely 4b call UTG+1 wider than UTG because it shows more strength to 5b shove with two players left to act rather than one. After writing all of that out, JJ is probably a close fold at a rush table because UTG+1 is usually readless vs UTG so his 3betting range is likely only value hands. It is certainly not a high variance spot you need to take in a soft tournament. I am less experienced than both of you so I would love feedback on what you think of my reasoning.