From preview, MZ seems to lead with a good advantage with Kingambit offering a strong device to sweep if Glalie isn't careful especially able given it can completely nullify the Prank Pecha from Glalie's side and other very similar cores. Both Manaphies immediately trade AV, guaranteeing a short game and even more so when Deoxys-S comes in and MZ decides to sack Manaphy immediately, though with the Gholdengo in back I doubt it would've lasted long anyway, with Deo-S revealing Protean LO. STail is forced in and Pecha comes in to check though a bit questionable given it offers the chance for MZ to immediately exploit it with Kingambit. GTusk is forced in and MZ nails it with a strong Iron Head and reveals EButton, going into Manaphy to risk for a Scald given the lack of options and indicating physdef. MZ decides to play it safe and go into STail, with Gholdengo trying to come in to exploit STail but a good Wish into Kingambit puts large pressure onto Glalie as they need to preserve Tusk HP though leaving STail chipped. Manaphy comes in and tries to Scald fish but to little luck and plays hard into Pecha to trigger EButton into GTusk. Opposing GTusk reveals Eject Pack and makes for clear entry into Deoxys-S, RMoon coming in on the revealed NP and MZ forced out by the potential of Scarf. GTusk comes in on Knock, though a seeming mistake that sap momentums Glalie does manage to turn it around as GTusk comes in and reveals EE, recovering some HP to alleviate some pressure of Kingambit. MZ's Deoxys-S comes in aggressively as Tusk clicks SR and this time Deo-S leaves RMoon low with an IBeam on the switch. Glalie's Deoxys-S comes in with the pivot and does manage to claim STail. MZ's Deoxys-S comes in and Glalie is forced to sack, but makes a bit of a misplay sacking Gholdengo to 2 TBolts which was one of the few checks to Deoxys-S otherwise. It seems pretty over for Glalie but MZ makes an extremely fatal mistake clicking Psychic... into the RMoon which reveals that it's slower and kills it with U-turn. You can read the whole of matte's analysis if you so wish but really it was a horrible miscalc either ay as MZ had assumed MGuard Scarf... the one set that Psychic would've actually played out against. Now Kingambit is the only threatening mon and with most defensive pieces down Glalie can clean up with Tusk and Deoxys-S for a fairly safe win, scouting the Scarf Gholdengo and Knocking it to secure it.
Really, by good advantage, it was a pretty great advantage. Deoxys-S isn't a fun matchup for most physdef Mana teams, especially since the speed control tied, Scarf RMoon was considered but we had other outs or usually did in Prank Pecha being able to come in and force it out or trade. Problem was Kingambit completely made that prospect useless and was another rough mon that we coped against because it was rare in testing. MZ made a horrible misplay that ultimately cost him the game and could've arguably won if they were just safer either but it is how it is. Glalie played well to their poor matchup, bluffing RMoon well enough and playing aggressively enough around the Gambit to win fast which was their only real out.