I've read the wikia enough to understand how their power works fam. What I'm saying is, regardless, he shouldn't have fallen to the ray gun. He either should've been quick enough to block/dodge it even in a powered down state, or strong enough to just take it without blinking. Even at rest, Super Saiyan Blue should've been giving him a power multiplier of well over 400x. It's just one of the many loopholes present throughout Dragon Ball Z and is inconsequential.