It's because of the jaw that people said it looks like Deathwing! I first through it was him too, but it's only the jaw.
Anyway, great job, the picture is really nice! Well colored and great ambiance! The only thing I don't like are his wings: too small for a dragon! If he was real, he wouldn't be able to fly^^ Nevertheless, it's a beautiful picture^^
Hmm, maybe he does a bit...not intentional, but WoW has had such an impact on fantasy art in general that I'd be hard pressed to say some of it hasn't seeped into me. Anyway, I'm sure they won't even notice me, over here in my tiny corner of the internet.
Ah, you never know these large corporate bastards. A million lawyers just looking for us little people to kick our ass. Anyways, I think your dragon is SIMILAR to DW, not the same, so I think you're safe And you still do damn good art, so kudos to you!