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
Co-op bullet-hell shooter set in a 17th-century British colonial Mars.

Execution · Practiced Mastery
Demanding platform execution plus a solvable boss-weakness ordering puzzle.
Jamestown: Legend of the Lost Colony leans Execution (Pure Mechanics); Mega Man leans Execution (Practiced Mastery).
Jamestown: Legend of the Lost Colony leans a little harder on execution, though the gap is small.
Jamestown: Legend of the Lost Colony
Bullet-dodging precision at high difficulty
Mega Man
Pixel-precise jumps and shots against brutal fixed stages
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Jamestown: Legend of the Lost Colony
Bullet patterns are fully scripted
Mega Man
Robot Masters cycle rigid scripted patterns
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Jamestown: Legend of the Lost Colony
Deterministic waves every run
Mega Man
Nothing changes between attempts
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Jamestown: Legend of the Lost Colony
Vaunt-chaining score systems and route memorization
Mega Man
Boss-order weakness routing is a known solvable layer
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.