Toriko will not only match the Z, I think they will surpass it within half a decade. The progression rate is exponentially fast. The only exceptions being the strongest movie villains like Broly, Janemba, Hirudegarn and if course Birusu. I don't know if the Toriko cast will ever make those levels. But mainstream Z I can see it.
I doubt that, if that does happen i see toriko becoming a dbz ripoff..
Still, nappa speedblitzes toriko.