head to head
Neither is simply harder - they are hard in different places. BlazBlue: Cross Tag Battle demands more reads; StarCraft demands more optimization.

Reads · Grand Arena
A tag-team anime fighter where team composition synergy and tag-in reads define competitive matches.

Optimization · Grand Arena
A real-time strategy classic where perfected build orders and mechanical speed decide most matches.
BlazBlue: Cross Tag Battle leans Reads (Grand Arena); StarCraft leans Optimization (Grand Arena).
BlazBlue: Cross Tag Battle leans a little harder on execution, though the gap is small.
BlazBlue: Cross Tag Battle
Cross Combo and tag setups require practiced execution
StarCraft
APM and micro control ceiling is huge
BlazBlue: Cross Tag Battle leans clearly harder on reads.
BlazBlue: Cross Tag Battle
Tag-in timing and team-based opponent modelling add adaptive layers
StarCraft
scouting and predicting human opponent builds
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
BlazBlue: Cross Tag Battle
No RNG; all mechanics are transparent
StarCraft
minimal hidden info beyond fog of war
StarCraft leans clearly harder on optimization.
BlazBlue: Cross Tag Battle
Team synergy optimisation and assist routes reward systematic play
StarCraft
build orders and economy are near-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.