I like to compare his/her recovery to that of Roy's. Great horizontal range, but like
Mario & Sonic Guy
said if sent in low angle... Well say goodbye to your stock. I would say say his/her recovery is a bit weaker than Roy's due to his/her low air speed. His recovery is is hard to challenge with aerials due to his/her superior range, but he is weak to projectiles and weak to counters in same way as Roy due to his powerful up-b.
I can see him/her having a problem with quick characters with projectiles/reflector/counter.
I do agree it is a bit too early to place Corrin and Bayonetta in the tier list. But if I had to place them with the current knowledge about them... I could see Bayonetta in the top 15 and Corrin near Ike.
Also I think we will get at least 1 more patch. Corrin is glitchy as ****.