It's not from the article Bisping wrote though. It's the title of the article MMAMANIA wrote which featured a quote from Bisping. The link to Bispings article at the daily telegraph is not titled the way Mania have made it look.
Bisping did not write 'Dear Diary: Dear Diary: I'm way better than Wanderlei Silva! Signed, Michael Bisping '
I like mmamania as a site, it's actually my favourite mma site around but the title of their article is very misleading.
They needed a catchy title so that people would talk about them.. and I guess they succeeded