As always, thanks for the analysis fas. Despite everyone's objections, we need more of this, not less.
BUT
The moneyball approach doesn't work well in Mage Wars versus Magic the Gathering:
1. MtG has progressive mana mechanics. You start at 0 and build up to cast more expensive spells as the game goes on. MW is flat/regressive and gives you a large reserve to start. You can reasonbly play the equivalent of an Emerakul in the first two turns. In MtG, you cheat it in like a degenerate or you ramp your b**** off. It's why going swarm (i.e. goblins, fish, merfolk, WW) is more viable in that game. Creature cost determines how quickly they see play, and playing more efficient threats than your opponent is actually relevant.
Which brings us to:
2. MW is wayyyyyyy more match-up dependent. Earth Elemental is probably the most efficient of the 20 drop fatties, but he's currently usable in maybe only two builds, and Darkfenne Hydra is an awful draw. The boogeyman of the meta, Iron Golem, bricks a lot of creatures above him. Sir Corazin, rated well below, eats him alive one-on-one (Yes, I've tested this in many game situations, including ones that favor IG, and he comes out on top). Overrated by the community? IMO, sure. But the forums have been in pro/anti-Piousflea mode since Bashcon and IG is the poster child of Piousflea hate.