I'm sorry, but you completely failed to understand what I said. Let's try again:
You can't be "hard to fuck up" and "see a big difference between a good and a bad one".
It makes the exact same sense with your edit. Cause the sense was already there, your edit didn't really change anything.
I've played DK, Rogue, Shaman, Warrior, Priest, Hunter and DH as dps in different moments of the game. I consider all of them to be equally easy. It just so happens that BoS Frost is the most engaging and most rewarding for me to play. So you can shove your condescension up your backdoor
But nobody plays BoS in PvP for obvious reasons so that's nor here nor there. Since you struggle to read my previous post in its entirety, I'll repeat here for you:
all specs are equally easy in terms of pure dps rotations in pvp. All of them have 4-5 buttons that are used regularly with 2-3 buttons that can be considered nukes. For example, let's compare Arms and Frost in terms of buttons:
Fillers: Slam and Overpower for Warrior, Obliterate and Frost Strike for Frost (with the caveat that Frost needs to keep their resources in mind and have runes/RP ready to slow enemies/heal up and Warrior needs the rage to have Mortal Strike ready to use (and Execute without SD up when target is low)
DoT: Rend for Warrior (if talented), Frost Fever for FDK
Short cooldown: Sharpen Blade Mortal Strike for Warrior, Remorseless Winter for FDK
Cooldowns: Warbreaker/Avatar/Bladestorm for Warrior, Pillar/ERW/Frostwyrm's Fury for FDK
So how exactly is Arms so much harder than Frost? And try not to spout your emotional nonsense and actually think about it.