I didn't get a chance to benchmark a MR 9700 equipped notebook, but the performance figures given by ATI show an average 25% increase in performance for tests such as 3DMark03, Tomb Raider and AquaMark 3 running at 1024 x 768 resolution. This seems to fall in line with the 33% increase in core clock rate speed.
Does the MR 9700 live up to the illustrious career of its desktop cousin? If the average 25% increase in performance is across the board for things such as AA and AF, then definitely. A jump of that magnitude is nothing to sneeze at.
Really there is not much else to say about the MR 9700. New mobile parts follow a predictable upgrade trend and the MR 9700 doesn't differ much from the line. It is both faster and more energy efficient. The MR 9700 obtains both increased performance and lower power consumption through the change to a low-k silicon process.
ATI's dominance in the mobile market is yet to be challenged and I believe it still won't be in this generation of mobile parts. The NV36M faces a tough battle if it doesn't switch over to a low-k process. It could have fast clockspeed but then power consumption would skyrocket. This is good news for ATI as their market share should continue to grow.