Just in case any of you guys are interested, I played the demo, and basically hated it. It has most of the same problems Empire had for me, except that it runs slightly better. I have been a serious wargamer for many years, and as far as I am concerned the battlefield movement click delay is absolutely untenable for serious tactical gaming. The graphics are not good enough by comparison to the resources used by the PC, and there are too many leftovers from Empire. I regret that I cannot buy any game utilising the Warscape engine, as NTW's demo confirms to me that it is beyond fixing.
I stress that this is my PERSONAL opinion, and none of you guys altered it. (Just in case anyone felt guilty. Or proud. Or whatever! )
Thanks for your time and help. Props also to CA for releasing the demo prior to my wasting my money.