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.

Execution · Practiced Mastery
A gritty crime shooter following two doomed mercenaries through botched heists.

Execution · Pure Mechanics
Nine pointer-driven minigames bundled with a Wii Remote, from duck-hunt shooting to table tennis.
Kane & Lynch: Dead Men leans Execution (Practiced Mastery); Wii Play leans Execution (Pure Mechanics).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Kane & Lynch: Dead Men
Cover shooting accuracy under pressure
Wii Play
Pointer aim and timing carry shooting and ping-pong games
Wii Play leans a little harder on reads, though the gap is small.
Kane & Lynch: Dead Men
Fragile Alliance betrayals add faint human guessing
Wii Play
Two-player duels add slight mutual prediction
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Kane & Lynch: Dead Men
Set-piece encounters vary little
Wii Play
Find Mii crowds and target spawns randomise lightly
Kane & Lynch: Dead Men leans a little harder on optimization, though the gap is small.
Kane & Lynch: Dead Men
Squad orders and encounter knowledge
Wii Play
Minigames are too shallow to deeply optimise
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.