head to head
Race Driver: Grid asks more than Mount Your Friends, and the gap is optimization.

Execution · Pure Mechanics
Absurd physics limb control tested under a timer atop a tower of friends.

Execution · Practiced Mastery
Aggressive circuit racing testing car control over memorisable tracks and braking points.
Mount Your Friends leans Execution (Pure Mechanics); Race Driver: Grid leans Execution (Practiced Mastery).
Mount Your Friends leans a little harder on execution, though the gap is small.
Mount Your Friends
QWOP-like limb control under a timer is the entire challenge
Race Driver: Grid
Aggressive wheel-to-wheel car control is the core demand
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Mount Your Friends
Rivals shape the tower but climbing is solo execution
Race Driver: Grid
Online racing adds light opponent positioning awareness
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Mount Your Friends
The stack you face is visible, nothing hidden
Race Driver: Grid
Damage outcomes add slight unpredictability to contact
Race Driver: Grid leans clearly harder on optimization.
Mount Your Friends
Grip-route planning up the pile helps marginally
Race Driver: Grid
Braking points, lines and flashback management 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.