head to head
StarCraft II: Wings of Liberty asks more than Street Fighter IV, and the gap is optimization.

Execution · Grand Arena
Real-time strategy where hands, reads, and build optimization all matter at the top.

Execution · Grand Arena
A high-execution fighter where one-frame links and opponent modelling separate competitors.
StarCraft II: Wings of Liberty leans Execution (Grand Arena); Street Fighter IV leans Execution (Grand Arena).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
StarCraft II: Wings of Liberty
APM, macro, micro-control under pressure
Street Fighter IV
One-frame links and FADC combos demand extreme motor precision
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
StarCraft II: Wings of Liberty
1v1 ladder vs adaptive humans modeling you
Street Fighter IV
Reading opponent habits, wake-up patterns, and adaptations is the meta
StarCraft II: Wings of Liberty leans a little harder on variance, though the gap is small.
StarCraft II: Wings of Liberty
map spawns minor; mostly known
Street Fighter IV
Virtually no RNG; every outcome is skill-driven
StarCraft II: Wings of Liberty leans clearly harder on optimization.
StarCraft II: Wings of Liberty
build orders, economy curves heavily solved
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.