How to defeat "MY" team on White 2?

Sorry for my bad English, I’m from Indonesia.

I played Pokemon World Tournament in Pokemon White 2 using a “custom” PWT (edit using DTE apps on PC).I entered the team I used in Pokemon HeartGold as a finalist, and I couldn’t beat “me”.Finalist (Heartgold) team contains (random order) :

Charizard(Nature Quiet)EV 255 Atk./ Flare Blitz // Shadow Claw // ThunderPunch // Flamethrower /

Salamance(Nature Serious)EV 198 Atk - 252 Spd./ Outrage // Zen Headbutt // Flamethrower // Fly /

Garchomp(Nature Lonely)EV 255 Atk - 148 S. Atk ./ Outrage // Dragon Rush // Earthquake // Crunch /

Tyranitar(Nature Lax)EV 161 Atk - 255 Deff./ Earthquake // Ice Punch // Stone Edge // Payback /

Red Gyarados(Nature Lonely)EV 208 Deff - 126 Spd./ Thunder // Surf // Ice Beam // Hydro Pump/

Flygon(Nature Rash)238 Atk - 116 S. Atk./ Crunch // Earthquake // Outrage // Hyperbeam /

Any recommendations on how to beat it?Currently the team I use (White 2) ; Zoroark / Lucario / Volcarona / Samurott / Hydreigon / Haxorus .

Single battle tournament format, Lv set 50, duplicate Pokemon and items.Thank you

Pleaselog inorregisterto add a comment.

Teach your Haxorus Rock Slide(TM80, found inMistralton Cavein the Guidance Chamber) if it doesn’t have it already.

Teach Samurott Ice Beam(TM13, found inGiant Chasmin the cave) if it doesn’t have it already.

Teach Lucario Aura Sphere(Level 51) if it doesn’t have it already.