head to head
Grand Theft Auto V asks more than Sonic Heroes, and the gap is reads.

Execution · Practiced Mastery
Sandbox crime playground spanning shooting, driving, and a persistent online economy.

Execution · Practiced Mastery
A 3D Sonic where you swap between three-character team formations mid-level.
Grand Theft Auto V leans Execution (Practiced Mastery); Sonic Heroes leans Execution (Practiced Mastery).
Sonic Heroes leans a little harder on execution, though the gap is small.
Grand Theft Auto V
Driving and shooting demand decent inputs.
Sonic Heroes
Speed sections punish sloppy control
Grand Theft Auto V leans clearly harder on reads.
Grand Theft Auto V
Online PvP exists but mostly gear/positioning, not modeling.
Sonic Heroes
Scripted enemies only
Grand Theft Auto V leans a little harder on variance, though the gap is small.
Grand Theft Auto V
Some mission and lobby randomness.
Sonic Heroes
Fixed level layouts
Sonic Heroes leans a little harder on optimization, though the gap is small.
Grand Theft Auto V
Heists, money loops, builds learnable.
Sonic Heroes
Team-formation switching and rank routes
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.