head to head
Neither is simply harder - they are hard in different places. Full Mojo Rampage demands more optimization; Mario Kart 64 demands more reads.

Execution · Twitch Chaos
Twin-stick dodging layered on roguelike build decisions under procedural RNG.

Execution · Twitch Chaos
N64 couch classic where blue shells and shortcuts decide friendships.
Full Mojo Rampage leans Execution (Twitch Chaos); Mario Kart 64 leans Execution (Twitch Chaos).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Full Mojo Rampage
Twin-stick dodging and aiming carry every fight
Mario Kart 64
Mini-turbo snaking and shortcut execution
Mario Kart 64 leans clearly harder on reads.
Full Mojo Rampage
Enemies are scripted swarms, not adaptive minds
Mario Kart 64
Couch rivals bait shells and fakes
Full Mojo Rampage leans a little harder on variance, though the gap is small.
Full Mojo Rampage
Procedural levels and random pin rolls shape runs
Mario Kart 64
Item draws swing every race
Full Mojo Rampage leans clearly harder on optimization.
Full Mojo Rampage
Loadout and blessing choices compound across a run
Mario Kart 64
Shortcut and line knowledge is fully mapped
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.