I always find it funny how some people think mythic raiders are some kind of elite gaming force lol. You aren't going to find crazy ass baller raiders until you're in like top 250 (being generous) even there you got your knuckleheads lol. If you can not fuck mechanics up and always be online for raid you can at least get a trial in a mythic guild, assuming you are also average in your damage/healing/whatever. And I'm willing to bet (without any evidence :O internet bet) that every guild has that one guy who is great at his class, and he won't fuck mechanics up, just don't ask him to do anything special because he'll likely fuck that up lol.
RL: We're gonna have a soak group move out and catch the herp then spread 5 yards so the herp doesn't stack and morph into the derp.
RL: Alright, let's have Phil, Mark, Brian, Carl and Fred be the soak group
Fred: ...
RL: Oh wait no, no sorry not Fred, Andrew you'll be the 5th
If you ever see/hear that in chat, just know Fred is the guy who will probably top meters and never get called out for fucking up but they know better than to ask him to do any kind of assignment lol. Matter fact now that I'm on a rant, if you ever look at logs and you see someone with great gear but their dps isn't what it should be they are probably the Phil of the group, who can put up decent numbers but where Phil excels is his ability to do any fucking job. You need someone to handle 3 different tasks at once, monitor debuffs on a group, call out who is next in some list, watch all the adds hp, heal the raid, main tank, and do range dps all at the same time, Phil is your man. He'll never do great damage but Phil is your MVP.