head to head
Neither is simply harder - they are hard in different places. Clash Royale demands more optimization; SpyParty demands more reads.

Reads · Mind & Math
Real-time PvP card battler decided by elixir trades and outguessing your opponent.

Reads · Pure Mind Games
A spy performs missions at a cocktail party while a sniper studies the crowd for one inhuman tell.
Clash Royale leans Reads (Mind & Math); SpyParty leans Reads (Pure Mind Games).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Clash Royale
Placement precision and elixir timing under pressure
SpyParty
Sniper aim and spy input precision matter at high level.
SpyParty leans clearly harder on reads.
Clash Royale
Live human opponent baits and counters you
SpyParty
Pure 1v1 behavioral modeling; both players adapt endlessly.
Clash Royale leans a little harder on variance, though the gap is small.
Clash Royale
Opponent's deck hidden until cards appear
SpyParty
Mission sets and partygoer randomness add modest noise.
Clash Royale leans clearly harder on optimization.
Clash Royale
Elixir trades and matchup theory are deep
SpyParty
Tells, timings, and mission orders reward deep study.
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.