Krishna in the Bhagivad-Gita is incredibly violent. He slaughters the armies of friend and foe alike (Arjuna and his brothers) and reveals himself to Arjuna as a fanged eater of worlds.

Gotama Buddha tried to defend himself from Mara before the Bhodi tree, until he stopped in realization that the earth himself would protect him. I believe that is the most violent act of Gotama Buddha, but I am not certain.

There is a profound difference here.