I second Shareholder's comments. 6CC is designed for those travelers who don't care about points and miles, but want benefits.
I travel so much that I don't care about how many miles I have or how many points I have. The reason I'm loyal to certain airlines and hotel chains is for the perks and benefits that can make all the difference.
Intercontiental gears its 6CC to those who want the recognition and treatment, not the miles or points.
But, if you are into miles, you do get bonuses ontop of the normal 500 for being a 6CC member.