From the
Wiki:
"VR training is researched and developed."
There's a lot of light streaks and 'lens flare' but sometimes without any obvious source.
Could it be Kojima is trying to suggest that VR was developed in his universe (by the Patriots, Foxhound, whoever) and it's somehow tied into Big Boss and psychic forces?
I've still got to play Peace Walker so I might be wrong but in MGS 1-4 the only character who rode a horse was The Boss:
Obviously from MGS3 we know her outcome but the imagery would be a strong one for Big Boss and it can't be a coincidence that it looks like Ocelot is the one riding the horse that Big Boss shoots at the fiery unicorn/Pegasus thing from.
So yeah, looks similar to the Animus from Assassin's Creed, would give Kojima the freedom to tell stories from 'memories'.
And one last idea I had - what if the game is a remake of Metal Gear except you play as Big Boss leading up to it and Solid Snake is your final boss?