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

Optimization · Pure Optimization
Instanced online RPG where deck-like eight-skill builds decide battles before they begin.

Optimization · Mind & Math
Norse-flavored RTS with tile control and seasonal pressure.
Guild Wars leans Optimization (Pure Optimization); Northgard leans Optimization (Mind & Math).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Guild Wars
Interrupt timing and kiting in skirmishes
Northgard
light micro under pressure
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Guild Wars
GvG and arena metagame against adapting humans
Northgard
MP vs adaptive humans
Northgard leans a little harder on variance, though the gap is small.
Guild Wars
Modest drop and spawn randomness
Northgard
winters, wandering events
Guild Wars leans a little harder on optimization, though the gap is small.
Guild Wars
Eight-skill build construction is the game's soul
Northgard
clan economy and tile control
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.