head to head
vs
HearthstonevsSpace Station 13
Hearthstone leans Variance (Grand Arena); Space Station 13 leans Variance (Grand Arena).
HearthstoneSpace Station 13
Axis by axis
Execution1 vs 2
Space Station 13 leans harder on execution: Clunky intentional interface; speed helps but rarely decides.
Reads6 vs 6
Even - both lean on reads about the same.
Variance7 vs 7
Even - both lean on variance about the same.
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.