The data is up their for you to see. top rating % alone, Mage are 7th in SS, 9th in blitz, 11th in 2’s and 15th in RBG. Pretty mid to straight bad.
If you prefer dustvar 2400+ data then, they are 4thdps in SS, 7th in blitz, 15th in 2s.
I don’t see Openess in it.
But in 3’s thats different, due to their synergy with disc and a sthealter.
1st in avg top rating and first in 2400+ tied with guess what, feral.