I agree that Windows 8 is so far rather unconvincing with regard to providing a realistically strong competitor to the iPad in market terms; but if I were to hear that the Windows team was focusing on some technical aspect, I'd expect, based on history, to see them have pretty good success with it.
The reason it isn't high on the list is because they already tackled that for Win7. You may not remember, but it was a growing problem before 7.
They aren't saying here that they need to reduce memory consumption further; they are saying that they will do the same thing with battery life for Win8, that they did with memory for Win7.
I'm throwing another 12GB of RAM (making 24GB total) into my system tomorrow when I install Windows 8. Together with my new SSD it'll help crunching through some large data sets so that I can hit 100% CPU utilization. It cost me $100 USD to do so in a country where we often pay double for electronics. Few "normal" people can utilize all of that during the normal course of using a PC. Memory pressure is an easy problem to solve.
It's not tweaking memory management that solved the problem - it's that our computers started coming with 4 gigabytes of RAM.
That's not what I experience with VMs. Unless you restrict yourself to the desktop and Windows Explorer, it doesn't feel good.
If Microsoft's previos focus on reducing memory consumption produced prior versions of windows, their new focus on increasing battery life should produce Windows 8 tablets that last a half an hour, tops.
While I'm at it, in general, fuck Windows 8. The UI may be nice, but Microsoft is taking such a massive power dump on developers and users alike with this turkey that they have a tough road ahead of them if they want to even get within spitting distance of the iPad in terms of mindshare.