Nostalrius Begins - Quality wow vanilla realm (1.12)

ok this paladin stuned me and deal 1338 damage in 0.5 sec i dont even seen animation
it not "he deal all damage then u are in stun" , he deal it in 0.5 sec at stun start and after stun end my hp 500/2200

Does not look like a hack to me. This is what a reckbomb paladin does.
https://www.youtube.com/watch?v=fe_rTpG3G7s