head to head
Neither is harder. They score identically on all four axes, so the difference between them is in kind, not degree.

Execution · Light / Casual
A casual licensed action game testing little beyond light co-op coordination.

Execution · Light / Casual
A relaxed collect-everything playground with near-zero failure pressure.
Harry Potter and the Goblet of Fire leans Execution (Light / Casual); LEGO Marvel's Avengers 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.
Harry Potter and the Goblet of Fire
Simple co-op spell casting with generous timing
LEGO Marvel's Avengers
Mashing through enemies asks almost nothing of the hands
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Harry Potter and the Goblet of Fire
Enemies are fixed waves, no adaptation
LEGO Marvel's Avengers
No adaptive opposition anywhere in the sandbox
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Harry Potter and the Goblet of Fire
Collectible bean locations are fixed
LEGO Marvel's Avengers
Collectible locations are fixed, just initially unknown
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Harry Potter and the Goblet of Fire
Light card collection and spell upgrade choices
LEGO Marvel's Avengers
Hundred-percent completion is a checklist, not a puzzle
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.