100% yes

No one accepts 720p as really HD anymore it seems.

I'm not sure. Possibly. For whatever reason, I feel like the MCC will sell more than 3m lifetime, and I'm not even in the Xbox Nation! Or whatever it's called these days.

Halo's a big franchise, and I suspect most who play on the Xbox One play Halo, or at least like it. Why else would you buy an Xbox? It's why I had a 360 last gen, and an original Xbox the previous gen.

Its not a collection either

i can see it being my most played new gen game overall.

Halo is played out. It was only successful back in the day because it was console gamers first FPS and even then it wasn't anything special. Even worse by today's FPS standards.

I can see it doing 5m+ LT easily.

Is it? I felt Halo: Reach was the best in the series (Never played Halo 4), and most of my friends felt the same way when it came out. Of course, we were in high school, then, but still. I'd buy the MCC, even though it doesn't include Reach. The games were very good, and I still like to play the first and second occasionally on PC.

You means more than one game in the package? If not...

1. GTA V
2. TLOUR
3. MCC

I think GoW:HD have a chance to stay ahead TLOUR and MCC.

Only GTA V for Xbone/PS4 can outsell it really.