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

Optimization · Pure Optimization
A turn-based tactical strategy game set in the American Civil War.

Optimization · Systems & Chaos
Puzzle adventure about coaxing a giant half-tame creature through ancient ruins.
The Bluecoats: North vs. South leans Optimization (Pure Optimization); The Last Guardian 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.
The Bluecoats: North vs. South
turn-based tactical inputs, minimal reflex
The Last Guardian
Slow climbing and platforming, very forgiving
The Bluecoats: North vs. South leans a little harder on reads, though the gap is small.
The Bluecoats: North vs. South
scripted AI in campaign, not adaptive
The Last Guardian
Trico is willful but not modeling you adversarially
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
The Bluecoats: North vs. South
random battle resolution elements
The Last Guardian
Trico's unpredictable compliance adds noise
The Bluecoats: North vs. South leans a little harder on optimization, though the gap is small.
The Bluecoats: North vs. South
tactical unit and formation optimization
The Last Guardian
Environmental puzzles with intended solutions
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.