off more than he or anyone else could chew 
(ROOT (NP (ADVP (RP off) (JJR more)) (SBAR (IN than) (S (NP (NP (PRP he)) (CC or) (NP (NN anyone) (JJ else))) (VP (MD could) (VP (VB chew)))))))
(ROOT (NP (ADVP (RP ) (JJR )) (SBAR (IN ) (S (NP (NP (PRP )) (CC ) (NP (NN ) (JJ ))) (VP (MD ) (VP (VB )))))))