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
A dungeon-management strategy game where you build lairs and crush invading heroes.

Optimization · Pure Optimization
LucasArts adventure sending Indy down three routes toward Atlantis.
Dungeons 3 leans Optimization (Pure Optimization); Indiana Jones and the Fate of Atlantis 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.
Dungeons 3
minimal direct control, mostly management
Indiana Jones and the Fate of Atlantis
Pointing and clicking, light fistfight option
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Dungeons 3
scripted hero AI, not adaptive
Indiana Jones and the Fate of Atlantis
No adaptive opposition
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Dungeons 3
some random dungeon events
Indiana Jones and the Fate of Atlantis
Solutions hidden until reasoned out
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Dungeons 3
base-building economy and unit optimization
Indiana Jones and the Fate of Atlantis
Three-path puzzle chains reward deduction
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.