head to head
Neither is simply harder - they are hard in different places. Blood Bowl 2 demands more variance; StarCraft II: Wings of Liberty demands more execution.

Variance · Grand Arena
Turn-based fantasy football where orcs, elves, and dice decide the league.

Execution · Grand Arena
Real-time strategy where hands, reads, and build optimization all matter at the top.
Blood Bowl 2 leans Variance (Grand Arena); StarCraft II: Wings of Liberty leans Execution (Grand Arena).
StarCraft II: Wings of Liberty leans clearly harder on execution.
Blood Bowl 2
Turn-based tactics; no reflex demand
StarCraft II: Wings of Liberty
APM, macro, micro-control under pressure
StarCraft II: Wings of Liberty leans clearly harder on reads.
Blood Bowl 2
PvP positioning baits opponents into bad dice commitments
StarCraft II: Wings of Liberty
1v1 ladder vs adaptive humans modeling you
Blood Bowl 2 leans clearly harder on variance.
Blood Bowl 2
Block dice and failed pickups decide entire matches
StarCraft II: Wings of Liberty
map spawns minor; mostly known
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Blood Bowl 2
Risk-ordering actions and team development are deep solvable craft
StarCraft II: Wings of Liberty
build orders, economy curves heavily solved
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.