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 pointer-aim shooting gallery scored on accuracy and combo upkeep.

Execution · Practiced Mastery
Precision sniping and arena navigation through fixed, gimmick-laden levels.
Link's Crossbow Training leans Execution (Pure Mechanics); MDK leans Execution (Practiced Mastery).
Link's Crossbow Training leans a little harder on execution, though the gap is small.
Link's Crossbow Training
Pointer aim speed and accuracy are literally the whole game
MDK
Sniper-mode precision and arena dodging demand steady hands
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Link's Crossbow Training
Targets and enemies follow set spawn patterns
MDK
Alien enemies behave on fixed scripts
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Link's Crossbow Training
Stages replay identically for score chasing
MDK
Levels are authored with nothing random
MDK leans a little harder on optimization, though the gap is small.
Link's Crossbow Training
Combo multipliers and spawn memorisation lift high scores
MDK
Learning arena gimmicks and item use solves each level
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.