head to head
Magic: The Gathering Arena asks more than Marvel Snap, and the gap is optimization.

Optimization · Grand Arena
A deep card game blending opponent reads, draw variance, and sequencing.

Reads · Grand Arena
A fast card game where the snap mechanic makes reads central.
Magic: The Gathering Arena leans Optimization (Grand Arena); Marvel Snap leans Reads (Grand Arena).
Magic: The Gathering Arena leans a little harder on execution, though the gap is small.
Magic: The Gathering Arena
Pure clicks, no mechanical skill
Marvel Snap
No execution component
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Magic: The Gathering Arena
Bluffing instants and combat tricks against humans
Marvel Snap
Snap/retreat decisions are pure opponent psychology
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Magic: The Gathering Arena
Mana screw and topdecks remain decisive
Marvel Snap
Hidden locations and draws drive swings
Magic: The Gathering Arena leans clearly harder on optimization.
Magic: The Gathering Arena
Deepest sequencing, deckbuilding, and stack puzzles
Marvel Snap
Deck construction and curve still matter
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.