Sp's do not have a high skillcap at all, it is quite easy if you ask me
Yeah.. this shows how much you know about high end pvp.
Spriests are one of the most complex casters to master right now right up there with affliction warlocks.
This is because there is just so many things to keep up and have on cooldown all the time. Calling it easy is ignorant to say the very least.
Im guessing you had your 2s team dominated by a spriest + random fotm and therefore you go out of your way trying to belittle the spec.
With that said;
Spriests will be top tier in 3v3 for sure if they are paired with a class that can babysit them (ie peel the spriest for the entire game)