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 · Grand Arena
Team hero shooter blending FPS mechanics with ability economy mind games.

Execution · Grand Arena
A high-execution fighter where one-frame links and opponent modelling separate competitors.
Overwatch leans Execution (Grand Arena); Street Fighter IV leans Execution (Grand Arena).
Street Fighter IV leans a little harder on execution, though the gap is small.
Overwatch
Hero aim, movement, and ability timing
Street Fighter IV
One-frame links and FADC combos demand extreme motor precision
Street Fighter IV leans a little harder on reads, though the gap is small.
Overwatch
Ult tracking, flanks, and baiting human teams
Street Fighter IV
Reading opponent habits, wake-up patterns, and adaptations is the meta
Overwatch leans a little harder on variance, though the gap is small.
Overwatch
Minor spread and matchmaking noise
Street Fighter IV
Virtually no RNG; every outcome is skill-driven
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Overwatch
Team comps, ult economy, and positioning theory
Street Fighter IV
Frame data, punish windows, and matchup charts are deeply studied
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.