At least he thinks so: his resume page says "saved the company by optimizing performance up to an acceptable level." That's not a quote from somebody else!
Just because the quote sounds arrogant doesn't mean its not true ;)
I have no inside info on its "truthy-ness", just making a small point.
Besides, at some point someone looking to hire him is going to ask him to back that up, and it would be foolish to invent stuff you can't defend. (I realize people get away with lying on resumes quite often, but bold claims call attention to themselves.)