head to head
vs
Mario Kart WiivsRe-Volt
Mario Kart Wii leans Execution (Twitch Chaos); Re-Volt leans Execution (Pure Mechanics).
Mario Kart WiiRe-Volt
Axis by axis
Execution6 vs 7
Re-Volt leans harder on execution: Twitchy RC car handling punishes sloppy steering
Reads1 vs 1
Even - both lean on reads about the same.
Variance6 vs 4
Mario Kart Wii leans harder on variance: blue shells and items are random
Optimization5 vs 4
Mario Kart Wii leans harder on optimization: routes and item strategy are solvable
Two games can score the same on an axis and still test it in very different ways - read each rationale, not just the number.