Do players on the winning Splatfest team get more rewards?

Do you earn more rewards at the end of a Splatfest if you were on the winning team?

For example, the last Splatfest was Chicken vs Egg. Would I have earned more rewards if I had sided with the winning team Chicken?

Of course yes, as the Splatoon2 wikia states:

Players on the winning team will earn more Super Sea Snails that those on the losing team

This rule was introduced in the first Splatoon and it has not changed. I can confirm also from personal experience.

Yes. I don't think it's explicitly stated in either Splatoon game but it's well documented elsewhere.

If two players are on opposing teams but have the same Splatfest rank - they are both Chicken / Egg Defenders for example - if Team Chicken won, the Chicken Defender gets more super sea snails.