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.

Execution · Practiced Mastery
A retro gridiron sim mixing input timing with play-call guessing against an opponent.

Execution · Practiced Mastery
A gritty WWII Call of Duty that introduced the Zombies mode.
ABC Monday Night Football leans Execution (Practiced Mastery); Call of Duty: World at War leans Execution (Practiced Mastery).
Call of Duty: World at War leans a little harder on execution, though the gap is small.
ABC Monday Night Football
Timing passes, jukes and tackles demands controller precision
Call of Duty: World at War
Twitch gunfights in fast multiplayer lobbies
ABC Monday Night Football leans a little harder on reads, though the gap is small.
ABC Monday Night Football
Two-player matches involve guessing the human's play call
Call of Duty: World at War
Human opponents reward positioning prediction
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
ABC Monday Night Football
Fumble and catch rolls add bounded football randomness
Call of Duty: World at War
Random lobbies, spawns, and zombie waves
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
ABC Monday Night Football
Play-calling and roster knowledge form a solvable layer
Call of Duty: World at War
Perk loadouts and map control are learnable
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.