I remember when he was harder. Day 1, he was like a level 90 boss because of a bug when he was meant to be a level 60 one. Beat him before they fixed it; now he feels too easy. lol
I think I am one of the few who did not like the Radahn fight. Him and the fire giant just felt gimmicky to me. I have beat him before the difficulty was fixed, in NG+, and now since the difficulty was fixed. Felt the same in every case (other than how hard the first fight was).