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 licensed retro football simulation game.

Execution · Practiced Mastery
The original 2003 WWII shooter built around cinematic squad set pieces.
Adidas Championship Football leans Execution (Practiced Mastery); Call of Duty leans Execution (Practiced Mastery).
Call of Duty leans a little harder on execution, though the gap is small.
Adidas Championship Football
passing and shooting control precision
Call of Duty
Aim and reaction carry the scripted firefights
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Adidas Championship Football
human opponent prediction in multiplayer matches
Call of Duty
Light multiplayer prediction; campaign AI is scripted
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Adidas Championship Football
minor ball bounce randomness
Call of Duty
Some spawn and hit unpredictability
Call of Duty leans a little harder on optimization, though the gap is small.
Adidas Championship Football
team tactics and formation setup
Call of Duty
Memorising set pieces and weapon positions
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.