1) He does have any argument whatsoever, namely that PETA means well if not acts well
2) Given that he bothered to articulate a point while you just said they're barely better than Fred Phelps, he has not been awarded a "loss"
3) The enormity of the aforementioned comparison drags the discourse so low that you can hardly say an ad hominem is out of bounds
4) None of the declarative sentences (that is, statements) in his post:
a) I don't think animal rights is a bullshit cause
b) PETA is annoying but their heart is in the right place
c) comparing them to the Westboros is ridiculous and small-minded
appears to be bullshit.
In short, you've made one of the most useless posts ever. You're the shit! (For the win!)
you're so cool bro.