Both logos have cool, unique colors but its the Blues that makes better use of it. That paired with the Sharks logo's use of a hockey stick will give the Blues this point.
Here's another one of those eternal questions. Why would a Blues singer ever have to face a Shark? I guess it doesn't matter, just that the shark gets dinner.
Blues as a team name doesn't leave you with a whole lot of logo options, so this works. I was a fan of the trumpets though, which the team wore as a shoulder patch in the late '90s. Can't have everything, though. The Sharks logo is easy — it's a shark — the creativity comes with the triangle as a basic shape and the broken hockey stick. I don't love hockey sticks in logos but this sort of makes sense for the Sharks. Still, we have a pair of solid logos which makes this a difficult match to determine. But we'll give it to the Sharks for that fierce logo among other things.