head to head
I Spy Spooky Mansion Deluxe asks more than Batman: The Telltale Series, and the gap is variance.

Variance · Light / Casual
A choice-driven Batman story with negligible skill demands.

Variance · Systems & Chaos
A hidden-object search game about spotting items in cluttered themed scenes.
Batman: The Telltale Series leans Variance (Light / Casual); I Spy Spooky Mansion Deluxe leans Variance (Systems & Chaos).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Batman: The Telltale Series
Quick-time combat is choreography, not skill
I Spy Spooky Mansion Deluxe
Clicking found objects, no twitch element
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Batman: The Telltale Series
Villains follow the script, never adapting
I Spy Spooky Mansion Deluxe
No opponent; it is a solo search
I Spy Spooky Mansion Deluxe leans clearly harder on variance.
Batman: The Telltale Series
Story branches are hidden information once through
I Spy Spooky Mansion Deluxe
Items are hidden in cluttered scenes to discover
I Spy Spooky Mansion Deluxe leans a little harder on optimization, though the gap is small.
Batman: The Telltale Series
Detective scenes are guided with no real solving
I Spy Spooky Mansion Deluxe
Scanning systematically speeds finds, little deeper system
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.