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

Reads · Grand Arena
A neutral-focused fighter where managing the GRD gauge against an adapting opponent creates a constant strategic tug-of-war.
StarCraft II: Wings of Liberty leans Execution (Grand Arena); Under Night In-Birth II Sys:Celes leans Reads (Grand Arena).
StarCraft II: Wings of Liberty leans a little harder on execution, though the gap is small.
StarCraft II: Wings of Liberty
APM, macro, micro-control under pressure
Under Night In-Birth II Sys:Celes
GRD-boosted combos and precise Chain Shift timing demand real execution
Under Night In-Birth II Sys:Celes leans a little harder on reads, though the gap is small.
StarCraft II: Wings of Liberty
1v1 ladder vs adaptive humans modeling you
Under Night In-Birth II Sys:Celes
GRD tug-of-war with a human opponent is persistently adaptive
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
Under Night In-Birth II Sys:Celes
No RNG; GRD state is visible information
StarCraft II: Wings of Liberty leans a little harder on optimization, though the gap is small.
StarCraft II: Wings of Liberty
build orders, economy curves heavily solved
Under Night In-Birth II Sys:Celes
GRD management theory and optimal punish routing are well-documented
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.