Go do a search on eBay for Xbox 360 consoles. Notice how it's actually hard to find a working system amongst all the defective ones being sold? I doubt those owners would list their experience as being enjoyable.
Now that Bungie is a private company there's no guarantee that Halo 4 will be Microsoft's savior as it has in the past.
Everyone expected Final Fantasy XIII to be PS3 only, and we now know there will be PS3 and Xbox 360 versions, so there's absolutely no reason that the same couldn't happen with Halo 4.
Personally, I think Crapbox 360 is a well deserved nickname. From a features/functionality perspective, yes it is a good system. From a hardware quality perspective, it is abysmal.