Murasakibara could have prevented a lot of those threes with his broken defence, I mean heck, sure Mimidoria can shoot from anywhere but the guy literally completed the games with the opponent's scoring ZERO, or they could just triple-team Mimidora and let Murasakibara handle most of Shutoku team on his own
If you forgot Murasakibara normally guards inside the 2 point area so if your on the outside your pretty much out of his defence. But it makes sense what your saying