Biggest issue with Teach and Xebec looking so similar isn't about WB, we know WB doesn't care about this kind of stuff because "everyone is a child of the sea".
But HOW the fuck did the WG give this guy a warlord spot? This is the same group that hunted pregnant women because of the risk the Pirate King might have a kid.
The more story advances, the more incompetent the WG is.