Yeah, and how long does it last and what's the CD? Yeah, thought so. Any PT that isn't dense can avoid firing his burst into roll. It's not that difficult.
As for the last part, let me refresh your memory:
You made it sound like everyone and their mother can kill through a PTs defenses which is, quite frankly, nonsense. The only way to kill a PT though KO combined with Shield and adrenal is to have high burst damage, which not every class has.
I also find it funny you completely ignored my other points. So how are the other classes better at dealing with focus? Marauder? Nope. Gunslinger? Nope. Scoundrels? To extents.
Edit: All you have to do is look at the ranked top 100. That paints a very clear picture of the situation each class is in.