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

Execution · Competitive PvP
A military shooter testing aim with moderate prediction of human opponents online.

Execution · Competitive PvP
Arcade punch timing with counter prediction in human bouts.
Medal of Honor: Warfighter leans Execution (Competitive PvP); Ready 2 Rumble Boxing leans Execution (Competitive PvP).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Medal of Honor: Warfighter
Gunfights reward aim in both campaign and multiplayer
Ready 2 Rumble Boxing
Punch timing, dodges and rumble combos reward quick hands
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Medal of Honor: Warfighter
Human opponents in multiplayer demand positional prediction
Ready 2 Rumble Boxing
Human bouts become feint-and-counter prediction
Medal of Honor: Warfighter leans a little harder on variance, though the gap is small.
Medal of Honor: Warfighter
Spawns and engagements add modest unpredictability
Ready 2 Rumble Boxing
Nothing hidden once boxers are learned
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Medal of Honor: Warfighter
Class loadouts and map knowledge form a thin layer
Ready 2 Rumble Boxing
Boxer matchups and rumble meter use are quickly mapped
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.