head to head
vs
Crusader Kings IIvsMagic: The Gathering - Duels of the Planeswalkers 2015
Crusader Kings II leans Optimization (Systems & Chaos); Magic: The Gathering - Duels of the Planeswalkers 2015 leans Variance (Systems & Chaos).
Crusader Kings IIMagic: The Gathering - Duels of the Planeswalkers 2015
Axis by axis
Execution1 vs 0
Crusader Kings II leans harder on execution: pausable, no reflex
Reads3 vs 4
Magic: The Gathering - Duels of the Planeswalkers 2015 leans harder on reads: Human multiplayer rewards modelling opponents; AI duels do not
Variance5 vs 7
Magic: The Gathering - Duels of the Planeswalkers 2015 leans harder on variance: Draw order and hidden hands dominate single games
Optimization7 vs 7
Even - both lean on optimization about the same.
Two games can score the same on an axis and still test it in very different ways - read each rationale, not just the number.