's about as convincing as any other arnie musclefest , 
(ROOT (S (VP (VBZ 's) (ADJP (ADJP (RB about) (RB as) (JJ convincing)) (PP (IN as) (NP (DT any) (JJ other) (NN arnie) (NN musclefest))))) (, ,)))
(ROOT (S (VP (VBZ ) (ADJP (ADJP (RB ) (RB ) (JJ )) (PP (IN ) (NP (DT ) (JJ ) (NN ) (NN ))))) (, )))