Okay I'll admit I was just trying to vent, I can man up and admit when I'm being a douche, hell I wasn't even really mad at you
the other guy I was posting too had pissed me off, I just happened to see your post, and latched onto it as something else to rage about...
But as for all tanks masteries having a cap, or deminish point... That's not really true.. as far as I can see, Prot Pallies mastery is the ONLY one with a cap, whereas the other three all have deminish points, to use Prot Warriors as an example, yes no sane prot warrior is going to continue to blindly reforge all their gear to mastery once they hit passive 102.4%, BUT should an upgrade have mastery on, they're hardly going to reforge it away are they? As it WILL still grant them an increase to mitigation, through increased Critical Block chance, whereas a Paladin in the same situation is wasting any point of excess mastery, as once they hit the magic 102.4% (a number which is verging on attainable now, even in average gear ((this guy is sitting around 90% avoidance raid buffed and his gear is decidedly average))) all further mastery will do is.... well nothing, it'll take up ilvl points. As for DK/Druid mastery... does that even have a deminish point? as far as I can see it doesn't matter if you have 1 mastery or 100, it'll still be just as useful, as their mastery directly relates to the Death Strike heal/Savage Defense Shield, which is a fairly major part of their tanking skillsets, as is not effected by any kind of CTC cap.
I'm just gunna ignore the last comment, as we're clearly both venting our anger here