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 · Competitive PvP
Wii U minigame park whose asymmetric hide-and-seek modes shine with friends.

Execution · Competitive PvP
Arcade wrestling that tests reversal timing and little else by design.
Nintendo Land leans Execution (Competitive PvP); WWE 2K Battlegrounds leans Execution (Competitive PvP).
WWE 2K Battlegrounds leans a little harder on execution, though the gap is small.
Nintendo Land
Motion and GamePad dexterity across minigames
WWE 2K Battlegrounds
Button-mash combos and reversal timing set the pace
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Nintendo Land
Asymmetric chase games create real human mind-games
WWE 2K Battlegrounds
Human opponents add light reversal mind games
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Nintendo Land
Some random layouts and item spawns
WWE 2K Battlegrounds
Power-ups and interactive arenas inject party chaos
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Nintendo Land
Per-attraction tactics, mostly shallow
WWE 2K Battlegrounds
Shallow systems - move knowledge helps a little
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.