Looking at the pedigree, it looks like the bottom side added smarts to the top, making Ch Señorita a complete bulldog.
I could be wrong but whenever I look at a good dog's pedigree, one side of the pedigree is always inbred or line bred.
For example this bitch http://www.thepitbullbible.com/forum...hp?dog_id=8046
When we campaigned her dam Ch IcePick, she wasn't a smart dog(chest, shoulder) typical of a mixed bred mutt. But she was a straight forward fight crazy bitch.
Her sire Screaming Icon was a smart head dog. When I bred them together, Screaming IcePick got the best of both world. She will defend and kill.