You're comparing Apples to Oranges here. Bootstrap is not a template, it's a framework for people who know what they're doing to quickly build fully customized but aesthetically pleasing websites with a lot of the pain removed from cross-browser CSS.
It is similar to something like Blueprint (http://www.blueprintcss.org/), which I have used for my prototypes with a lot of success, but just taken much further.
It is similar to something like Blueprint (http://www.blueprintcss.org/), which I have used for my prototypes with a lot of success, but just taken much further.