Considering that 343i is no bungie, I very much doubt that the next Halo will be anything gamers consider decent. I expect a metacritic score of 80-85. It's real value is 70-75, but we must also take into account Microsoft bribery which will influence a few scores.
Also, I doubt Halo 5 will sell above 5 million, since the core gamers have abandoned the Xbox platform.
Uncharted 4 numbers are within range.
Edit - Moderated - Starcraft