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 · Pure Mechanics
A classic beat-em-up demanding execution against scripted enemy waves.

Execution · Pure Mechanics
A touch-based skateboarding sim demanding precise finger trick execution.
Teenage Mutant Ninja Turtles III: The Manhattan Project leans Execution (Pure Mechanics); Touchgrind Skate 2 leans Execution (Pure Mechanics).
Touchgrind Skate 2 leans a little harder on execution, though the gap is small.
Teenage Mutant Ninja Turtles III: The Manhattan Project
beat-em-up timing and enemy juggling
Touchgrind Skate 2
precise finger-based trick control
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Teenage Mutant Ninja Turtles III: The Manhattan Project
enemies run simple fixed scripts
Touchgrind Skate 2
no opponent to out-predict
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Teenage Mutant Ninja Turtles III: The Manhattan Project
minor enemy spawn randomness
Touchgrind Skate 2
minimal randomness in runs
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Teenage Mutant Ninja Turtles III: The Manhattan Project
character choice and route memorization
Touchgrind Skate 2
trick-combo route planning
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.
full breakdown
Teenage Mutant Ninja Turtles III: The Manhattan Project →
full breakdown
Touchgrind Skate 2 →