There are more casuals than "pros" in this game simply because it is Star Wars. Don't believe me? Get ranked going where the "Pros" should be. You can't, it doesn't work, because you can't field 2 8 man teams. There are only 1 or 2 teams on each server at the pinnacle of competition, the rest are just above average. The above average don't like to get rolled in ranked, so they roll casuals in normals.
It's not just a casuals suck, they are lazy problem. The above average teams are lazier than the casuals IMO. They are the ones who don't want to struggle to get better.
Quit blaming casuals/"pros" for all of PvP whoa's as there are many factors contributing.