jackpot is still better for popping for example if u have 15 luck(without hp2) u will have 90 meaning 290k with hp2 if 6x but if u can 2x with hp2 then it would be 430K luck
I tried this out aswell when I used the grav I got 2 Twilight iridescent memory's and I got nothing from the flesh so I recommend the grav more than flesh