head to head
Harry Potter: Quidditch World Cup asks more than Mario & Sonic at the London 2012 Olympic Games, and the gap is optimization.

Execution · Practiced Mastery
Tests arcade sports timing in a licensed fantasy sport with swingy Snitch catches.

Execution · Twitch Chaos
An Olympic minigame collection testing short bursts of motion-control timing.
Harry Potter: Quidditch World Cup leans Execution (Practiced Mastery); Mario & Sonic at the London 2012 Olympic Games leans Execution (Twitch Chaos).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Harry Potter: Quidditch World Cup
Timing passes, tackles and Snitch chases needs moderate dexterity
Mario & Sonic at the London 2012 Olympic Games
Waggle timing and button rhythm decide each event
Harry Potter: Quidditch World Cup leans a little harder on reads, though the gap is small.
Harry Potter: Quidditch World Cup
Versus a friend, faking plays adds light prediction
Mario & Sonic at the London 2012 Olympic Games
Party opponents are barely predictable or worth predicting
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Harry Potter: Quidditch World Cup
Snitch appearances and combo opportunities add swing
Mario & Sonic at the London 2012 Olympic Games
Event RNG and motion-control noise add slop
Harry Potter: Quidditch World Cup leans clearly harder on optimization.
Harry Potter: Quidditch World Cup
Special move charging and team choice reward system knowledge
Mario & Sonic at the London 2012 Olympic Games
Per-event tricks are learned in minutes
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.
full breakdown
Harry Potter: Quidditch World Cup →
full breakdown
Mario & Sonic at the London 2012 Olympic Games →