head to head
Rocket League asks more than SpeedRunners, and the gap is execution.

Execution · Pure Mechanics
Mechanical car-soccer where execution is the ceiling.

Execution · Pure Mechanics
Momentum-perfect platform racing spiced with item mind games against humans.
Rocket League leans Execution (Pure Mechanics); SpeedRunners leans Execution (Pure Mechanics).
Rocket League leans clearly harder on execution.
Rocket League
Aerials, flicks, dribbles, pure mechanical ceiling
SpeedRunners
Grapple swings and boost timing at full speed decide races
Rocket League leans a little harder on reads, though the gap is small.
Rocket League
Rotations and 50-50 reads against humans
SpeedRunners
Timing item throws against human racers' habits wins exchanges
SpeedRunners leans a little harder on variance, though the gap is small.
Rocket League
Almost deterministic physics
SpeedRunners
Item pickups add party-game chaos
SpeedRunners leans a little harder on optimization, though the gap is small.
Rocket League
Training routines, rotation theory
SpeedRunners
Optimal racing lines per track are learnable
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.