I still might have won. Metagross could've survived another surf and just MM again. After that, I'd Bullet Punch Ape and finish it off with Shaymin, and Luke would again be finished by my Ape.
Nope, don't mind
And if Meta hadn't of got the attack boost, it wouldn't have 2HKO'd Scizor, then I would've switched out from Scizor, possibly sacrificing Nape to come back and KO your Shaymin with BP, and if needed ExtremeSpeed, which meant Luke would be on full health and would not have been KO'd by VW and would then KO Gliscor with HP Ice