head to head
For Honor asks more than Tekken Tag Tournament, and the gap is variance.

Reads · Competitive PvP
Directional melee fighter with deep mixups.

Execution · Grand Arena
A tag-team 3D fighter layering team optimization onto Tekken's execution and reads core.
For Honor leans Reads (Competitive PvP); 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.
For Honor
Direction-based attacks need fast inputs
Tekken Tag Tournament
Tag combos and netsu juggles demand precise inputs
For Honor leans a little harder on reads, though the gap is small.
For Honor
Mixups versus parries are pure reads
Tekken Tag Tournament
Tag timing adds another layer of human mind-games
For Honor leans clearly harder on variance.
For Honor
Revenge build and ganks add swings
Tekken Tag Tournament
Open information; nothing hidden between rounds
Tekken Tag Tournament leans a little harder on optimization, though the gap is small.
For Honor
Hero kits and feat builds tuned
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.