I find myself torn between two things; as the absorption in one game increases, the other will be the neglected until time or interest is found.

Brawl, no offense to anyone anticipating the release of Mario Kart Wii, will surely be top of the game pile for most people for quite some time (and by quite some time, maybe 3+ months hardcore then steady from there). I've played GH for over 3 months now and am starting to play it just every now and then, for many more reasons beyond loss of interest (school, work, social life, etc).

But for the most part both in the end will do very well, if Nintendo is keen on releasing them with a bit of space between their releases, as releasing two long awaited games so close together could leave them out of luck sales-wise, for a couple months (in my opinion).

Just my two cents.