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.

Variance · Light / Casual
A choice-driven comedy adventure with almost no skill test at all.

Execution · Light / Casual
A choice-driven narrative adventure following Clementine through a collapsing world.
Tales from the Borderlands leans Variance (Light / Casual); The Walking Dead: Season Two leans Execution (Light / Casual).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Tales from the Borderlands
Occasional QTEs are the only physical demand
The Walking Dead: Season Two
Occasional QTEs with generous timing
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Tales from the Borderlands
No opponent of any kind
The Walking Dead: Season Two
Characters react along scripted branches
Tales from the Borderlands leans a little harder on variance, though the gap is small.
Tales from the Borderlands
Story branches are unknown until chosen
The Walking Dead: Season Two
Choice outcomes are unknown only on first play
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Tales from the Borderlands
Choices barely change outcomes; nothing to solve
The Walking Dead: Season Two
Almost nothing to optimize; the story carries
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.