>>6614760That would be the arm kibble/molding. While the articulation is all there on both of them, it's tricky to pose their arms without just having everything hit up against everything else.
The panels on swindle's upper arms tend to hit his backpack and restrict his bicep swivel, and the molding of the upper and lower arm just get in the way of each other. His elbow joint is constructed in a way that would imply a 180 degree bend, but they won't go any further than 90 degres because of it. Brawl isn't as bad, but you really need to bend the elbow in a particular way to keep the upper and lower arm from hitting each other. If you aren't careful I could definitely see the edges of the plastic getting a little chewed up. Brawl can bend his elbows a little more than 90 degrees, and his bicep swivel is fine.
They're not bad in the slightest, though. It's just a lot easy to critique than it is to praise. Brawl is a beefy little dude and fairly expressive as well, it's hard to pose him in a way that doesn't look good.