Pretty much, yeah. I tested each pitch with maximum movement, SCEA does a good job with the maximums, their biggest thing is the classifications.
I looked over my sheet, the fastest slider I found with 50+ movement was Jake Arrieta's at 86.71 (53), Here are all of the sliders with 80+ movement and their velocities:
Sergio Romo - 79.62 (93)
Daniel Bard - 84.44 (97)
Joe Smith - 81.93 (85)
Joe Thatcher - 77.66 (84)
Louis Coleman - 79.02 (82)
Shawn Camp - 79.95 (87)
Mike Adams - 80.66 (94)
Bryan Shaw - 81.74 (86)
Pretty short list, all of them are 77-82 except for Bard, but for 2012 his slider is averaging ~81 mph with similar movement. Take away these and the average movement for sliders becomes less than 4.8 inches.
I don't mind leaving high 70's low 80's sliders the same, its the mid 80's sliders that need to be toned down.
Edit:
OK here are the guys with 60+ movement
and 84 mph+ sliders:
Juan Cruz - 84.52 (66)
Daniel Bard - 84.44 (97)
Change Bard to his 2012 repertoire and you have one guy out of 652 major league pitchers
I tallied up the guys with 50+ movement and 84mph+ sliders and there were 14 guys, the Orioles minors alone have 4 guys with 60+ movement and 84mph+ sliders.