the performances are so overstated , the effect comes off as self-parody . 
(ROOT (S (S (NP (DT the) (NNS performances)) (VP (VBP are) (ADVP (RB so)) (VP (VBN overstated)))) (, ,) (S (NP (DT the) (NN effect)) (VP (VBZ comes) (PRT (RP off)) (PP (IN as) (NP (NN self) (HYPH -) (NN parody))))) (. .)))
(ROOT (S (S (NP (DT ) (NNS )) (VP (VBP ) (ADVP (RB )) (VP (VBN )))) (, ) (S (NP (DT ) (NN )) (VP (VBZ ) (PRT (RP )) (PP (IN ) (NP (NN ) (HYPH ) (NN ))))) (. )))