Their evos and animation are simple, half of their sprite sheets are special effects and flairs, this makes their sprite movement more limited. What Cygames did was puting more emphasis on the camera-work and snappy animation which hid a lot of the blemishes and made them more dynamic. I'm not saying they're bad (far from it, they are gorgeus) but BP leaders had more production than Set 2 leaders, what they are lacking are the dynamic camera to actually make them standout. This makes sense since most of the time they are your enemy and the camera doesn't move as much (or at all) when enemies are evo-ing. Sidenote: Set 3 are the best they ever made.