I've raided before and quite honestly most gear is suitable for raiding. It boils down to player skill. Sure you're running numbers, but no amount of parsers is going to tell you how to do a rotation or how to dodge. It comes down to everyone's personal play style which is why a parser will always be a vicious tool to me. Because you are digging into someone else's personal business with the use of a parser, whether they want to hear about the numbers or not. The mentality of, "You have a low DPS score. Get out." Does not fly with me. I've raided and during those raids I've never really had an issue with anyone, I'm no hardcore elitist that thrives off parsing like it's a lifeblood. But I'm certainly not a casual person either. I enjoy progression just as much as anyone else, but I don't make it my goal to micromanage each skill and try to tap into everything possible about the class. Am I playing to my full potential? Probably not. Am I having fun with how I am playing? Certainly. I would never subject myself to going into a party without feeling comfortable as my skill as a player. If I know I am going to die a lot or if I DO die a lot in a raid I will openly tell people I am doing badly and I back out. I don't need a 3rd party tool to tell me I am doing bad when I can clearly see it myself.
Also for those elite players, why do you subject yourself to these kinds of people and then later complain about it? Why not just make an FC or LS with just elitist and roll from there. Stop blaming people in PF for your own lack of self-coordination. Nobody is putting a gun to your head and saying, "Play with bad or underskilled players." You make that choice on your own. The same can be said for casual players, stop going into PF's and pretending to know what you are doing, because at that point you become a liability to the rest of the group.