head to head
Magicka asks more than Grand Theft Auto V, and the gap is optimization.

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

Optimization · Practiced Mastery
A chaotic co-op action game where wizards combine eight elements into thousands of spells, often frying each other.
Grand Theft Auto V leans Execution (Practiced Mastery); Magicka leans Optimization (Practiced Mastery).
Magicka leans a little harder on execution, though the gap is small.
Grand Theft Auto V
Driving and shooting demand decent inputs.
Magicka
Typing element combos quickly mid-combat is the hands test
Grand Theft Auto V leans a little harder on reads, though the gap is small.
Grand Theft Auto V
Online PvP exists but mostly gear/positioning, not modeling.
Magicka
Enemies are scripted; friendly fire isn't adaptive
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Grand Theft Auto V
Some mission and lobby randomness.
Magicka
Co-op friendly-fire chaos adds unpredictability
Magicka leans clearly harder on optimization.
Grand Theft Auto V
Heists, money loops, builds learnable.
Magicka
Discovering and exploiting spell combinations dominates
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.