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

Execution · Practiced Mastery
A gleefully violent 1997 Build-engine shooter starring undead gunslinger Caleb.

Execution · Practiced Mastery
An arcade FPS that scores you for killing enemies in the most creative ways possible.
Blood leans Execution (Practiced Mastery); Bulletstorm leans Execution (Practiced Mastery).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Blood
Fast Build-engine combat demands aim and dodging
Bulletstorm
Leash, kick, and shot timing drive skillshot chains
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Blood
Niche multiplayer only; campaign enemies are scripted
Bulletstorm
Enemies are scripted fodder for your combos
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Blood
Some enemy spawn and hitscan unpredictability
Bulletstorm
Arenas and spawns are fixed and learnable
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Blood
Secret hunting, weapon economy, route knowledge
Bulletstorm
Maximising skillshot score per arena is a solvable puzzle
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.