he didn't use the fall speed of another thing, Grom use his jump, to get his momentum, and cleave his skull
the first one just shatter the pit lord spear and kill him with one hi.t thats not luck
says the highelf , care to elaborate why? cause spend his days defying the alliance and never getting caught, is hard someone who didn't had leadership qualities, even if this is not the point of the combat.Grom has proven in both timelines to be a spineless orc with zero good leadership qualities.