head to head
SpeedRunners asks more than Street Fighter, and the gap is optimization.

Execution · Pure Mechanics
Momentum-perfect platform racing spiced with item mind games against humans.

Execution · Competitive PvP
Wrestling crude controls to land specials while outguessing a human opponent.
SpeedRunners leans Execution (Pure Mechanics); Street Fighter leans Execution (Competitive PvP).
SpeedRunners leans a little harder on execution, though the gap is small.
SpeedRunners
Grapple swings and boost timing at full speed decide races
Street Fighter
Notoriously stiff inputs make landing specials the real fight
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
SpeedRunners
Timing item throws against human racers' habits wins exchanges
Street Fighter
Human versus rounds still reward bait and punish
SpeedRunners leans a little harder on variance, though the gap is small.
SpeedRunners
Item pickups add party-game chaos
Street Fighter
Nothing hidden between two visible fighters
SpeedRunners leans clearly harder on optimization.
SpeedRunners
Optimal racing lines per track are learnable
Street Fighter
Tiny moveset leaves little system to solve
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.