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

Execution · Practiced Mastery
A platform of millions of user-created multiplayer games spanning every genre, played mostly by younger audiences.
Nintendo Land leans Execution (Competitive PvP); Roblox leans Execution (Practiced Mastery).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Nintendo Land
Motion and GamePad dexterity across minigames
Roblox
Many popular experiences are obby/PvP tests of hands
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
Roblox
Multiplayer experiences pit you against other kids' minds
Roblox leans a little harder on variance, though the gap is small.
Nintendo Land
Some random layouts and item spawns
Roblox
User-generated content means constant unknown systems
Roblox leans a little harder on optimization, though the gap is small.
Nintendo Land
Per-attraction tactics, mostly shallow
Roblox
Grind economies and trading reward system mastery
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.