head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is reads, and it is a single point.

Execution · Pure Mechanics
Arcade hockey reflexes with light shot-angle guessing against human opponents.

Execution · Pure Mechanics
High-volume shooting accuracy through chaotic scripted raids.
Blades of Steel leans Execution (Pure Mechanics); Delta Force: Black Hawk Down leans Execution (Pure Mechanics).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Blades of Steel
Skating, passing and shot timing decide every rush
Delta Force: Black Hawk Down
Fast aim against dense hostile crowds is the core test
Blades of Steel leans a little harder on reads, though the gap is small.
Blades of Steel
Versus a human, goalie duels become guessing games
Delta Force: Black Hawk Down
Large multiplayer servers add human positioning play
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Blades of Steel
Fights and bounces add small arcade chaos
Delta Force: Black Hawk Down
Spawning enemy placements vary slightly between attempts
Delta Force: Black Hawk Down leans a little harder on optimization, though the gap is small.
Blades of Steel
Angle exploits on the goalie are quickly mapped
Delta Force: Black Hawk Down
Loadout choice and mission routes are learnable
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.