The winner of Splat Fests get one extra Sea snail. Just one. I don't know about you guys, but I don't feel like cheating on a game I actually like over that. You'll get far more Sea Snails by ranking up.
Wait, hold on a sec. These splatfests work by pitting the teams against each other, right? Group together a random bunch of Team Pop against a random bunch of Team Rock (in europe's case). Doesn't that mean that, if you are part of the more popular choice, you will get fewer matches than someone that picked the less popular one? Doesn't that mean that, if you want easy Sea Snail farming, you should go with the option that is more likely to lose?
Eh, whatever. Just, please don't do this. Please do not pick a team on the likelihood of said team winning. I've seen that happen with too many games, and I'd hate to see it happen here. Ruins all the fun of these events.