What you realy need to do is spend $4000.00 and get your self a custom made Canfield frame with 15" of travel.
Seriously, both are great bikes and as Rockstar stated, the Superlight is a xc/race frame where as the Blur is more of a trail bike.
If there was any significant bob with the superlight, the new 5th element shock should fix that right?
It is actualy not the bob of a Superlight that bothers alot of riders but the brake jack but if you look at the rest of the SL's attributes then the brake jack is nothing to worry about.
If you will be jumping and doing drops of say 3' or more then I suggest the Blur. Go for the Superlight if you want a racer.