I assume there is some miscommunication happening in this thread but of course some people are more competent than others in a given field/role and if you disagree I'm not sure what to say.
I took "Why are you better than anyone else" to mean better than everyone else. Because the only other way I know to interpret it (as "why are you better than some other person you know nothing about and have no reference to compare to") didn't make sense to me. But maybe that's my own fault.
Seriously? Have you seen the absolute crap that some people produce? You really don't think "it's necessary (or possible) to be better than anyone else"?