head to head
Street Fighter II' Turbo asks more than Nidhogg 2, and the gap is optimization.

Reads · Competitive PvP
Grotesque sequel keeping the fencing mind-game core with extra weapons.

Execution · Competitive PvP
The foundational test of fighting-game execution and human prediction at speed.
Nidhogg 2 leans Reads (Competitive PvP); Street Fighter II' Turbo leans Execution (Competitive PvP).
Street Fighter II' Turbo leans a little harder on execution, though the gap is small.
Nidhogg 2
Multiple weapons add execution wrinkles
Street Fighter II' Turbo
Charge timing and anti-air reactions at turbo speed
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Nidhogg 2
Still a pure human mind-game duel
Street Fighter II' Turbo
Fireball-trap mind games against an adapting human are the essence
Nidhogg 2 leans a little harder on variance, though the gap is small.
Nidhogg 2
Weapon spawns vary slightly
Street Fighter II' Turbo
Twelve public movesets, nothing hidden
Street Fighter II' Turbo leans clearly harder on optimization.
Nidhogg 2
Light matchup knowledge per weapon
Street Fighter II' Turbo
Matchup theory and spacing fundamentals were codified here
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.