head to head
vs
Bust-a-Move 4vsIt Takes Two
Bust-a-Move 4 leans Execution (Practiced Mastery); It Takes Two leans Execution (Practiced Mastery).
Bust-a-Move 4It Takes Two
Axis by axis
Execution6 vs 6
Even - both lean on execution about the same.
Reads2 vs 2
Even - both lean on reads about the same.
Variance3 vs 2
Bust-a-Move 4 leans harder on variance: Bubble colour feed is random but bounded
Optimization5 vs 5
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.