head to head
Tetr.io asks more than Streets of Rage 4, and the gap is execution.

Execution · Practiced Mastery
A modern beat-em-up where precise combo execution and enemy-pattern mastery are the skill ceiling.

Execution · Pure Mechanics
A competitive online stacker testing raw speed and versus stacking strategy.
Streets of Rage 4 leans Execution (Practiced Mastery); Tetr.io leans Execution (Pure Mechanics).
Tetr.io leans clearly harder on execution.
Streets of Rage 4
Precise combo strings, parry timing, and star-move usage are decisive
Tetr.io
Lightning-fast piece placement decides every match
Tetr.io leans a little harder on reads, though the gap is small.
Streets of Rage 4
Enemies use scripted attack patterns; no adaptive opponent
Tetr.io
Human opponents in versus can be anticipated somewhat
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Streets of Rage 4
Enemy arrangement is largely fixed; minimal RNG
Tetr.io
Bag randomizer is bounded and quickly mappable
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Streets of Rage 4
Character selection, route sequencing, and score management reward study
Tetr.io
Stacking and garbage-management strategy underneath the speed
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.