If anything, ultimate fighting is safer and less cruel than America's blood sport.
( ( If anything ) ( , ( ( ultimate fighting ) ( ( is ( ( safer and ) ( less ( cruel ( than ( ( America 's ) ( blood sport ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (SBAR (IN If) (FRAG (NP (NN anything)))) (, ,) (NP (JJ ultimate) (NN fighting)) (VP (VBZ is) (ADJP (ADJP (JJR safer)) (CC and) (ADJP (RBR less) (JJ cruel) (PP (IN than) (NP (NP (NNP America) (POS 's)) (NN blood) (NN sport)))))) (. .)))
America's blood sport is more commonly known as boxing. 
( ( ( America 's ) ( blood sport ) ) ( ( ( is ( more commonly ) ) ( known ( as boxing ) ) ) . ) )
(ROOT (S (NP (NP (NNP America) (POS 's)) (NN blood) (NN sport)) (VP (VBZ is) (ADVP (RBR more) (RB commonly)) (VP (VBN known) (PP (IN as) (NP (NN boxing))))) (. .)))