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

Variance · Light / Casual
A short, unsettling visual novel about intrusive thoughts with no skill test.

Variance · Light / Casual
A visual novel tour of New York's vampire politics in the World of Darkness.
Milk Inside a Bag of Milk Inside a Bag of Milk leans Variance (Light / Casual); Vampire: The Masquerade - Coteries of New York leans Variance (Light / Casual).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Milk Inside a Bag of Milk Inside a Bag of Milk
no physical skill demand at all
Vampire: The Masquerade - Coteries of New York
Reading and choosing, nothing physical
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Milk Inside a Bag of Milk Inside a Bag of Milk
no opponent of any kind
Vampire: The Masquerade - Coteries of New York
No opponent
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Milk Inside a Bag of Milk Inside a Bag of Milk
branching text has minor unpredictability
Vampire: The Masquerade - Coteries of New York
Branch outcomes unknown only on first read
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Milk Inside a Bag of Milk Inside a Bag of Milk
barely any systems to solve
Vampire: The Masquerade - Coteries of New York
A few choices to optimize, mostly linear story
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.
full breakdown
Milk Inside a Bag of Milk Inside a Bag of Milk →
full breakdown
Vampire: The Masquerade - Coteries of New York →