head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is execution, and it is a single point.

Reads · Mind & Math
Real-time card battles testing deck building and predicting a live opponent's plays.

Reads · Mind & Math
Naval PvP with positional warfare.
Epiko Regal leans Reads (Mind & Math); World of Warships leans Reads (Mind & Math).
World of Warships leans a little harder on execution, though the gap is small.
Epiko Regal
Card placement timing matters more than dexterity
World of Warships
Slow aim with long lead times
World of Warships leans a little harder on reads, though the gap is small.
Epiko Regal
Live PvP rewards predicting opponents' deployments and counters
World of Warships
Map positioning and spotting are reads
World of Warships leans a little harder on variance, though the gap is small.
Epiko Regal
Card draw order randomises each match's options
World of Warships
Shell dispersion and matchmaker swings
World of Warships leans a little harder on optimization, though the gap is small.
Epiko Regal
Deck construction and elixir-style economy are studyable
World of Warships
Captain skills and ship builds deep
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.