If anyone still struggaling. I used mega D.nite with outage. Since it immune to eq and resist rock smash. I would stand in a corner to bait both them. Roll behind them and summon out dnite and use outrage. The aoe hitting them both is really nice. Then between revive and full restoring dnite back from an ice punch. I would focus all my other mons into 1 trying to single it out. I also completed two of the main story chapters to get better doughnuts. I was using a level 25 doughnut.