head to head
Metal Gear Solid: The Twin Snakes asks more than Hitman 2 (2018), and the gap is execution.

Optimization · Pure Optimization
More giant clockwork sandboxes where mapping NPC schedules is the real skill.

Optimization · Pure Optimization
The GameCube remake of Metal Gear Solid, a scripted stealth gauntlet that rewards memorized routes.
Hitman 2 (2018) leans Optimization (Pure Optimization); Metal Gear Solid: The Twin Snakes leans Optimization (Pure Optimization).
Metal Gear Solid: The Twin Snakes leans clearly harder on execution.
Hitman 2 (2018)
Minimal dexterity needed with a solid plan
Metal Gear Solid: The Twin Snakes
Boss fights and first-person aiming demand decent hands.
Metal Gear Solid: The Twin Snakes leans a little harder on reads, though the gap is small.
Hitman 2 (2018)
Clockwork NPC loops, nothing adapts
Metal Gear Solid: The Twin Snakes
Psycho Mantis only pretends to read you; all scripted.
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Hitman 2 (2018)
Mission stories hidden until explored
Metal Gear Solid: The Twin Snakes
Famous tricks are unknown once, then known forever.
Hitman 2 (2018) leans a little harder on optimization, though the gap is small.
Hitman 2 (2018)
Routing, disguises, and unlocks converge on solved runs
Metal Gear Solid: The Twin Snakes
Patrol routes and boss patterns converge to a solved run.
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.