Cloyster Moveset: Blizzard vs Avalanche

because has more dps, you use one blizzard and you need to charge the full bar again for use it, with avalanche you can cast both right away and it has lesser cd than blizzard, so in the end of a full cycle it will deal more damage, that is all.

Avalanche does much more damage for the same energy. I don't know why aurora beam is below avalanche. Those 2 look comparable.

Avalanche is a 2 bar move which will charge faster with Frost Breath as a quick move. However the difference is negligible. Proportionally if Avalanche is does 100% damage, Blizzard does 96.49%. In the end though, Avalanche allows you to use the move quicker (and dodge) than it takes to fully charge Blizzard.