I'll go with in game precedent which is:
the battle ends as soon as the move that KO'd the last pokemon ends. In this case that move is Bide (as it depletes all energy). Which is why Life Orb Recoil (or recoil in general AFAIK) can result in a tie, as they happen during a move, but status or weather can't as they happen after all moves.
Besides it is rather illogical for a ref to wait for the surviving pokemon to hit the fallen one, suffer from poison, then from weather before declaring the winner. It is feasible to imagine that when there are other pokemon, but on the last matchup, where the trainer of the pokemon that lasts a second longer wins, that wait is not really logical IMO.
EDIT: @below: fair enough.
So...
Venonat used Bide!
Damage: (11.5+14.25)*1.75= 45hp
Energy: 6 + 45/2 = 28.5
Venonat fainted due to exhaustion!
Wailmer lost 4hp due to poison
Wailmer fainted!
Its a Tie!
Item: Amulet Coin
HP: KO
EN: KO
3/2/3/2/60
Other: toxic (-4hp)
HP: KO
EN:
-6
1/2/3/2/45
Other:
Item: Life Orb
Prizes:
Objection:3CC
Yanma: 1EC, 3MC, 1DC
Wailmer: 1EC, 2MC, 1DC, 2KOC
EndQuote:2CC
Golett: 1EC, 3MC, 1DC, 1KOC
Venonat: 1EC, 2MC, 1DC, 1KOC
Frosty: 4UC