Why not? There are more Wii games than 360 games and more Wii owners than 360 owners, so if it has fewer games covered, to me that indicates a tilt in the other direction. I don't remember any multi-format mags giving Xbox more coverage than PS2, or N64 more coverage than Playstation (although in that case, N64 didn't have enough games to fill the space ). And it's not just the reviews, but also the previews, the whole mag in general.
Then the magazine needs to be larger. A multiformat mag needs to be bigger than the system-specific mags (that was always the case in the past), but GI is roughly the same size as the Nintendo, Playstation, and Xbox magazines. Weak.The GI "quickies" were created to address the resource problem but even that would get the magazine slammed if they did a "quickie" of a game that's actually good. For that reason the quickie reviews are there mostly for the comedic effect of listing a series of games that get 3.5 or something. It's not a perfect solution.
Not really the point, but I'll bite. Just looking at the latest issue... Reviews: who cares about Race Pro, Stoked, or Lord of the Rings Conquest? Previews: Do we really need previews of yearly sports games? Those can be cut.I don't think you could go through the magazine and easily select 360/PS3/DS games to remove and replace with Wii coverage.