Please summarize what's better about Atom for me, I'm interested. (I assume you mean Atom, as the other respondent did).
http://en.wikipedia.org/wiki/Atom_%28standard%29#Atom_compar...
but the most important, for me, is that Atom is a group effort under the IETF rather than an ad-hoc spec in one person's head. All other benefits are the result of that.