To be honest, I can't see MGR doing any better then DmC did.
MGR seems to be the type of game that WANTS to be like DMC, but comes off as a cheap knock off. It tries to add different things and mask you into believing its not trying, but I can see past the shallow effects that it kind of does try too hard.
To me it's like Never Dead. That game tried to really copy DMC. If you look at the start screen and click start, a gunshot is heard and right after that you hear the title of the game in a demonic voice. In fact I think that's one of the games MGR reminds me of a bit.
Anyway in terms of sales, I can't see it doing that much since most hack n' slash games are at an all time low these days. The only H&S game that's got a top spot is GOW, which is just a barbaric blood splattering, sex driven eleven year old's dream game, mixed with a dungeons and dragons nerd to put in the mythology. (No offense to D&D players if any are here). Plus MGR had its fair share of hatred from the fanbase. Even if they have ground zero, it didn't make the hate go away since some of the fans will try and make MGS Ground Zero sell more then rising. That's no different then fan buying the HD collection over DmC, hell some might have even bought it two or three times just to make sure DmC was under the radar.
I've yet to see a television commercial for DmC, or MGR where I live. I've seen ads on youtube and other anime related sites along wth video game sites as well, but no TV adds. There is the ad in Japan though.
I think their are a few MGR commercials, but I don't know. I think the reason DmC didn't have much commercials was because they were using a lot of the money for combichrist to make music, and for Nosia to be added in. Plus the actors, the Avatar set, etc. I'm not surprised DmC got only one commercial out.
But for me, I'll be skipping MGR, not because I like DmC better (which I do) but because it's not anything I won't see in this bad boy of a game right here