head to head
WWE 2K20 asks more than Wii Sports Resort, and the gap is reads.

Execution · Pure Mechanics
Island-themed collection of twelve motion-controlled sports showcasing the Wii MotionPlus accessory.

Execution · Competitive PvP
Reversal timing and grapple guessing games in a famously buggy wrestling package.
Wii Sports Resort leans Execution (Pure Mechanics); WWE 2K20 leans Execution (Competitive PvP).
Wii Sports Resort leans a little harder on execution, though the gap is small.
Wii Sports Resort
MotionPlus precision in swordplay, archery and bowling
WWE 2K20
Reversal timing windows decide matches but inputs stay forgiving
WWE 2K20 leans clearly harder on reads.
Wii Sports Resort
Local versus duels involve mild feinting
WWE 2K20
Human opponents bait reversals and mix grapple choices
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Wii Sports Resort
Slight physics and CPU pattern randomness
WWE 2K20
Notorious bugs add chaos; systems otherwise deterministic
WWE 2K20 leans a little harder on optimization, though the gap is small.
Wii Sports Resort
Each event has small learnable technique optima
WWE 2K20
Move-set knowledge and stamina management give an edge
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.