A good dogo from good lines will IMO out perform a bulldog. I ran bulldogs for years and have now switched to DOGOs due to how I hunt and their size.
JOJO do some research on the dogos before making statements you know little about. There is no pit or bulldog as we know it in the dogo. In fact here is a link explaining how they bred and came up with the DOGO.
http://www.dogousa.org/DACA/history_of_the_dogo.asp