head to head
StarCraft II: Wings of Liberty asks more than Street Fighter 6, 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 2D fighting game where execution meets relentless yomi at neutral.
StarCraft II: Wings of Liberty leans Execution (Grand Arena); Street Fighter 6 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 6
Frame-perfect inputs and combos are mandatory.
Street Fighter 6 leans a little harder on reads, though the gap is small.
StarCraft II: Wings of Liberty
1v1 ladder vs adaptive humans modeling you
Street Fighter 6
Adaptive opponent baits Drive Impacts and throws.
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 6
Essentially no randomness in match outcomes.
StarCraft II: Wings of Liberty leans clearly harder on optimization.
StarCraft II: Wings of Liberty
build orders, economy curves heavily solved
Street Fighter 6
Matchup charts, frame data, and combo routes.
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.