actually a 6870M could have alot of power
if perf per watt is better, then a Xwatt tdp in a laptop part can hold more power in the new gen over the old gen. since we dont have specs at all for that segment, i wouldnt even wonder about it yet

anyone who bought a 5870, and plans on getting a 6870 without reading any info, deserves to be fooled. i wish i could dump 2000$ a year on computer parts (i assume they also buy other components each year if they are already buying top end gpus yearly)