I wouldn't necessarily call Smiler rough. The jolt on the cobra roll is, but the rest of the ride isn't. Thing is, whilst the first half of the ride is okay in how it rides, I find the second half to be quite uncomfortable, and after the airtime hill, just not really pleasant.
Saw is intense, on the other hand. I've only ever felt the jolt at the bottom of the drop once, never found it rough or uncomfortable like so many people claim it to be.