head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is optimization, and it is a single point.

Execution · Grand Arena
A superhero fighter with gear-based customisation where execution and opponent reads sit atop a deep optimisation layer.

Execution · Grand Arena
A tag-team 3D fighter layering team optimization onto Tekken's execution and reads core.
Injustice 2 leans Execution (Grand Arena); Tekken Tag Tournament 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.
Injustice 2
Supermove confirms and precise character-specific combos demand execution
Tekken Tag Tournament
Tag combos and netsu juggles demand precise inputs
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Injustice 2
Meter burn mix-ups and opponent tendency tracking are constant
Tekken Tag Tournament
Tag timing adds another layer of human mind-games
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Injustice 2
No RNG; transparent match states
Tekken Tag Tournament
Open information; nothing hidden between rounds
Injustice 2 leans a little harder on optimization, though the gap is small.
Injustice 2
Gear stat distribution and character sub-archetype selection reward planning
Tekken Tag Tournament
Team synergy and tag combo routing are optimizable systems
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.