Dattebayo, we do not care how good it is competitively. Nobody here cares. It really isn't good to let Smogon do the thinking for you--you should think for yourself.
If I think for myself, I'll be murdered by elitists on the internet in heated debates. If you can't beat'em, join'em.
For Shiftry, one of the few low tier Pokemon who is uber material is something to behold.