I would agree with most of this, though I wouldn't use that tone of course. I feel like the heart of the matter here is your definition of "easier."
Does easier mean he wipes less than you? If so, this is a big problem. I don't think it's happening though.
Does easier mean you don't need the same amount of gear? This is a slightly smaller problem,wow gold though I'll point out again that the server firsts are typically done with very little new gear, which reinforces that skill and coordination can outweigh big gear disparities.
Does easier mean you have to work a little harder at playing your class?
Does easier mean the healers have to work harder?
Does easier mean your group can have a little more slop in its execution?