Original sentence: It is central to evaluate the claim of Swiftfox being faster than Firefox, as implied by it's name.Note that no explicit claim is made at the Swiftfox site.Swiftfox is a binary optimized build of the Mozilla Firefox web browser for Linux
Edited sentence: A different comparison between Firefox and other browsers has also been done, allowing an indication of the absolute speed of Swiftfox:.In order to evaluate the speed of Swiftfox, a comparison with Firefox was done.Swiftfox is a speed optimized build of the Mozilla Firefox web browser for Linux