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.

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

Execution · Grand Arena
A combo system built on constant Combo Breaker mind-games that create a unique adaptive read-off at every moment of a combo.
BlazBlue: Cross Tag Battle leans Reads (Grand Arena); Killer Instinct (2013) leans Execution (Grand Arena).
Killer Instinct (2013) leans a little harder on execution, though the gap is small.
BlazBlue: Cross Tag Battle
Cross Combo and tag setups require practiced execution
Killer Instinct (2013)
Shadow counters and Combo Breaker timing demand very precise inputs
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
BlazBlue: Cross Tag Battle
Tag-in timing and team-based opponent modelling add adaptive layers
Killer Instinct (2013)
Combo Breaker prediction is a pure read-off against an adaptive opponent
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
Killer Instinct (2013)
No RNG; all mechanics are fully visible
Killer Instinct (2013) leans a little harder on optimization, though the gap is small.
BlazBlue: Cross Tag Battle
Team synergy optimisation and assist routes reward systematic play
Killer Instinct (2013)
Instinct activation timing and optimal opener routes are well-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.