head to head
Magic: The Gathering Arena asks more than Frozen Synapse, and the gap is variance.

Reads · Mind & Math
A simultaneous-turn tactics game where you plot moves against a human's unseen plan and watch both resolve.

Optimization · Grand Arena
A deep card game blending opponent reads, draw variance, and sequencing.
Frozen Synapse leans Reads (Mind & Math); Magic: The Gathering Arena leans Optimization (Grand Arena).
Magic: The Gathering Arena leans a little harder on execution, though the gap is small.
Frozen Synapse
Simultaneous turns remove all dexterity
Magic: The Gathering Arena
Pure clicks, no mechanical skill
Frozen Synapse leans a little harder on reads, though the gap is small.
Frozen Synapse
You must predict a human's hidden plan each turn
Magic: The Gathering Arena
Bluffing instants and combat tricks against humans
Magic: The Gathering Arena leans clearly harder on variance.
Frozen Synapse
Hidden enemy orders and fog on some modes
Magic: The Gathering Arena
Mana screw and topdecks remain decisive
Magic: The Gathering Arena leans a little harder on optimization, though the gap is small.
Frozen Synapse
Line-of-sight geometry and timing are calculable
Magic: The Gathering Arena
Deepest sequencing, deckbuilding, and stack puzzles
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.