I think Pikachu would give base Zard a run for its money. Even without lightning rod I don't see Pikachu beating Mega-SceptileQuick Attack and Thunderbolt brought base Zard to it's knees, even after being worn out after Tyranitar and Metagross. I think it could give MCX a run for it's money. That said, I can't think of many Alain baseZard feats to compare against, if any.
I don't think it would beat MSceptile though, since Lightening Rod nullifies Pikachu's arguably two strongest moves.