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 · Competitive PvP
Lab-honed combo execution plus live mixup guessing against adapting human opponents.

Execution · Competitive PvP
A test of precise inputs and constant human prediction across a fixed roster of matchup puzzles.
Skullgirls: 2nd Encore leans Execution (Competitive PvP); Street Fighter II: The World Warrior leans Execution (Competitive PvP).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Skullgirls: 2nd Encore
Long combo routes and tight conversions demand serious hands
Street Fighter II: The World Warrior
Frame-precise inputs and combo timing define every matchup
Street Fighter II: The World Warrior leans a little harder on reads, though the gap is small.
Skullgirls: 2nd Encore
Mixups and resets only work by out-guessing a human
Street Fighter II: The World Warrior
Predicting human opponent's next move is constant and non-convergent
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Skullgirls: 2nd Encore
Fully deterministic fighter with nothing hidden
Street Fighter II: The World Warrior
No meaningful RNG; match outcomes are skill-determined
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Skullgirls: 2nd Encore
Team composition, assists and combo theory go deep
Street Fighter II: The World Warrior
Character matchups and punish routes are learnable but not fully solvable
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.