Are you looking for which Distro is easier to install, which would run faster, or both? If the latter, it may be of help to know that my laptop has less than half the processor speed of your laptop and it runs fc6 just fine. (Not blazing fast, but fine
Installing FC6 is easy; it's just a question of whether your hardware will be supported. You can check this forum for any problems, but you should be fine. Main things to look for are the graphics card, modem, wireless card(s), etc.