head to head
vs
Bunch of HeroesvsMario Bros.
Bunch of Heroes leans Execution (Practiced Mastery); Mario Bros. leans Execution (Pure Mechanics).
Bunch of HeroesMario Bros.
Axis by axis
Execution6 vs 7
Mario Bros. leans harder on execution: Precise jumps and bump timing under crowding enemies decide survival
Reads1 vs 1
Even - both lean on reads about the same.
Variance3 vs 2
Bunch of Heroes leans harder on variance: Enemy spawns and waves add some randomness
Optimization4 vs 4
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.