head to head
Neither is harder. They score identically on all four axes, so the difference between them is in kind, not degree.

Execution · Pure Mechanics
An arcade test of jump timing and enemy-flipping precision on a single screen.

Execution · Pure Mechanics
High-speed bike control and combat timing over memorised courses.
Mario Bros. leans Execution (Pure Mechanics); Road Rash 3 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.
Mario Bros.
Precise jumps and bump timing under crowding enemies decide survival
Road Rash 3
High-speed steering plus melee timing against rival riders
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Mario Bros.
Versus mode adds light human interference, enemies are scripted
Road Rash 3
AI riders follow patterns, not adaptive minds
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Mario Bros.
Enemy spawns vary slightly but patterns are quickly learned
Road Rash 3
Traffic and rival behaviour inject mild chaos
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Mario Bros.
POW block usage and enemy routing have known best lines
Road Rash 3
Bike upgrades and track knowledge compound across the career
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.