It ain't looking good. Two Marathon level disasters back to back.
Halo Campaign Evolved:
Cost: ~$100m
Release Peak: 25k
Gears of War: E-Day:
Cost: ~$400m
Release Peak: 31k
Halo Studio's, by the way, was completely dismantled over Campaign Evolved's abysmal performance
Gears of war, so far, is performing SIGNIFICANTLY WORSE comparatively with regard to its cost to performance
For comparison, a successful game:
Resident Evil 9:
Cost: ~$70m
Release Peak: 344k