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

Optimization · Pure Optimization
The classic AD&D CRPG where party planning beats dice luck over time.

Optimization · Systems & Chaos
A lighter loot ARPG of frontier adventurers with class relics and buildable forts.
Baldur's Gate leans Optimization (Pure Optimization); Torchlight III leans Optimization (Systems & Chaos).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Baldur's Gate
Pause-and-play needs minimal dexterity.
Torchlight III
Simple skill rotation and dodging
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Baldur's Gate
Scripted encounters, no adaptation.
Torchlight III
Monsters are scripted fodder
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Baldur's Gate
AD&D dice rolls throughout.
Torchlight III
Loot and map randomness standard for genre
Baldur's Gate leans a little harder on optimization, though the gap is small.
Baldur's Gate
Party builds and encounter prep solvable.
Torchlight III
Relic and skill builds, fort crafting bonuses
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.