Peridea Patrol is WAY overtuned

I can't speak to t1, but my r7 toons took down the r7 tier first try, no remod or special strategy or anything. Yes, Ezra healed a ton and out of the gate it looked like this was going to be fruitless, but the cooldown on his heal was high enough that I made measurable progress until finally I got him into the edge of yellow, bit him with DT(P) and poofed him out of existence. 

The POW/MQG event was much, much harder and required remodding for characters at the highest available tier for your relics. It's also fair to note that you get as many tries as you need and once you do get 3* you never have to play the event again. 

So... that first tier might be too hard, I don't know, but I'm happier with this than I was with Duel of the Fates, since I hate remodding.