That is such a loaded question and has many variables that aren't really addressed...
Are you wiping repeatedly on content due to bosses enraging? Are you stuck farming normal modes for loots, because the rest of your guild doesn't want to put the work into progress? Or are you breezing through the content you are doing, but you are just winning in damage.

For an example my guild is 9/12 Heroic ICC25 and 11/12 heroic 10, our fury warrior is in the top 5 on most fights (top 3 since he got full on Shadowmourne) but our affliction warlock and arcane mage tend to consistently top damage, along with one of our hunters. However the top 10 in dps may fluctuate fight to fight with about a 750 dps difference between 1-10 then it falls off from 11 down to the tanks. Are you doing so much more damage than the rest of your team that the difference is abhorrent like several thousand dps above?

Do they use consumables? Are they slacking in not flasking, eating food buffs, or using pots for dps increases?

If refusing to use consumables for raiding is an issue then you may need to find a more serious guild. If the dps difference in the top and the next few down is such a crazy number, then you may need to move on. If you are stuck raiding content that is beneath you to farm for badges and normal gear because your guild doesn't feel like working on hard modes you may need to move on. If you feel like the game loses its fun because you are stuck doing content beneath you or carrying your guild then you get more apathetic and logging on feels like a chore, and you need to find a place you fit in better.

If you are just winning dps but your guild is succeeding at hard content, bringing their consumables, and overall work together and you have fun raiding with them, stop complaining help your friends guide them to places which can help them shore up their rotations, make better gem and gearing choices (cause high end players know how ilvl doesn't always mean the best piece), and maybe learn when to use their dps cooldowns. Half of this game is learning to manage cooldowns and use keybinds and macros, and maybe all they need is a shove in the right direction. Lrn2play nub doesn't help anyone, and never has just leads to bitter recrimination and a digression into insults. However, constructive criticism can cause people to improve if they are willing to take it.