head to head
vs
ReignsvsSonic Shuffle
Reigns leans Variance (Systems & Chaos); Sonic Shuffle leans Variance (Pure Chaos).
ReignsSonic Shuffle
Axis by axis
Execution1 vs 3
Sonic Shuffle leans harder on execution: Minigames need modest timing and reflexes
Reads2 vs 3
Sonic Shuffle leans harder on reads: Some bluffing against human opponents in card duels
Variance7 vs 7
Even - both lean on variance about the same.
Optimization5 vs 3
Reigns leans harder on optimization: Learning which choice chains balance the four meters is mappable
Two games can score the same on an axis and still test it in very different ways - read each rationale, not just the number.