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

Reads · Pure Mind Games
Victorian passengers stalk assigned quarry aboard a time-travelling ship while blending in to dodge their own hunters.

Reads · Pure Mind Games
A split-screen trap duel testing prediction of where your human rival hid the bombs.
Murderous Pursuits leans Reads (Pure Mind Games); Spy vs Spy leans Reads (Pure Mind Games).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Murderous Pursuits
Timing kills and escapes takes modest motor skill.
Spy vs Spy
Simple movement and item fiddling under time pressure
Murderous Pursuits leans a little harder on reads, though the gap is small.
Murderous Pursuits
Blending among NPCs against humans hunting YOU is constant mind-games.
Spy vs Spy
Guessing where the rival spy laid traps is the core duel
Murderous Pursuits leans a little harder on variance, though the gap is small.
Murderous Pursuits
Unknown hunter identity and random weapon spawns hide threats.
Spy vs Spy
Item locations are hidden information each round
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Murderous Pursuits
Vignette routes and scoring systems reward learned play.
Spy vs Spy
Trap-and-counter knowledge forms a learnable layer
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.