I will say that having bowled on the Viper, Shark, and Cheatah, possibly the Chameleon(Rumor spread that this was the pattern at a certain tournament recently), the Cheatah is just not cool. I haven't bowled on the Scorpion but the Viper is closest to the Cheatah right? I've bowled 130s and 140s on the Cheatah a year ago and then shot 300 2 games later. Within the last month I bowled on the Viper and the Cheatah for 3-4 games and I will say the Viper is more fun and the Cheatah is really picky.
I'm willing to bet ball choice will determine your success on this pattern if you're playing it right. My Twisted Fury wouldn't find the pocket, simple as that. If it did it would be too high to too light to carry. I move a board in with my Rival and I have a much better look(broken down at this point).