As many have already said.

An "elitist" can be described as someone who is generally better at content than others, but it can also be someone who is good and/or thinks they are because they have more shiney stuff than you do and thus feel they are better.

My personal take on it is this - if someone has to tell you they're better than you. Then they really arent. Either people can see your ability because it's there or it's not and they want to convince you otherwise.