head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is execution, and it is a single point.

Optimization · Practiced Mastery
Open-ended stealth sandbox built on base-building and adaptive AI.

Optimization · Practiced Mastery
Planning a raid in advance, then executing it where one mistake kills.
Metal Gear Solid V: The Phantom Pain leans Optimization (Practiced Mastery); Tom Clancy's Rainbow Six leans Optimization (Practiced Mastery).
Tom Clancy's Rainbow Six leans a little harder on execution, though the gap is small.
Metal Gear Solid V: The Phantom Pain
Stealth and shooting inputs both matter.
Tom Clancy's Rainbow Six
One bullet kills, so entries demand clean aim
Tom Clancy's Rainbow Six leans a little harder on reads, though the gap is small.
Metal Gear Solid V: The Phantom Pain
Guards adapt loadouts across missions, light modeling.
Tom Clancy's Rainbow Six
Multiplayer raids add human counterplay
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Metal Gear Solid V: The Phantom Pain
Patrols, weather, supply drops randomize runs.
Tom Clancy's Rainbow Six
Terrorist placements are unknown until doors open
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Metal Gear Solid V: The Phantom Pain
Mother Base, loadouts, fulton economy deeply solvable.
Tom Clancy's Rainbow Six
The pre-mission planning phase is the real game
A matching score does not mean a matching test. Two games can both sit at 10 on execution and demand completely different things of you - which is why the reasoning above matters more than the number beside it.