head to head
Neither is harder. They score identically on all four axes, so the difference between them is in kind, not degree.

Optimization · Pure Optimization
Minimalist transit puzzle; route topology under spawning pressure.

Optimization · Pure Optimization
Road-network puzzle sister to Mini Metro; routing under pressure.
Mini Metro leans Optimization (Pure Optimization); Mini Motorways leans Optimization (Pure Optimization).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Mini Metro
light real-time line-drawing
Mini Motorways
real-time road drawing
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Mini Metro
no adversary
Mini Motorways
no opponent
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Mini Metro
station spawn pattern
Mini Motorways
house and destination spawn
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Mini Metro
line topology and routing
Mini Motorways
road network design
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.