>>38392590In case anyone else have trouble understanding the English language or just suck at battling as a whole, allow me to recap on his opponent could have won. Keep in mind that this is assuming gyara has max bulk invested.
Turn 1 - Dragon Dance without M-evolving thus outspeed zard-y.
Turn 2 - Waterfall for the 2HKO (30% to flinch as well) as zard-y's solar beam is a 3HKO on regular gyara.
Conclusion: Don't Mega Evolve and DD turn 1 for the waterfall sweep.