Previous games: 15-20 hours campaign with like 1/3rd cutscenes right?
If we now take TPP: 40+ hours campaign with still probably like 5-7 hours cutscenes.
(MGS 4 is an exception...)
If we compare:
MGS 1-3: ~33% cutscenes
MGS 5: ~15% cutscenes
I think that is what most reviewers are referring to. I can't believe it will have a lesser amount of story than previous entries. I'm pretty sure the ratio is the only thing that is different.
But I could be completely off the mark with that guess... 1 week... 1 week...
I think this is very realistic. It'll probably be the same amount, maybe even more, story than the previous games in total, but it will be spread more even-handedly across the whole experience.
Which is great, imo. It wasn't actually the fact of MGS's cutscenes which were problematic, it was their pacing. They always were huge exposition dumps which would have worked if they were spaced out more. Hope it's the case here.