I think you're right.Seems to be more with power from what I can see with non V-limited Type RAs anyway.
Both mine and my cousins white one are electric and a few others I know here at home are too.
My old V-Limited No. 288 was manual and my mates No. 083 is also manual.
I have a set of manual windows and door cards but not too fussed about putting my current car back anytime soon.
My first STi RA had electric with the circles over the manual regulator holes but my current one has the manual windows still.