I won’t have a lot of hands-on input, with Godtear still on the way, and Skytear barely played, but I do have some initial impressions about the latter and can at least give a little insight into why I opted to try both.
Briefly, Godtear is incoming because of a perceived straightforwardness. I see this one almost more in the same vein as a game of The Duke. The only cards in the game are basically player aids that remind you of what’s available to each champion and minion set, in each of the two main phases of the game. Even though this is a heroes and minions miniatures game, I actually see this competing with War Chest more than Skytear because of this (minus the bagbuilding).
Skytear is a card game with a miniatures game supporting it. But the miniatures game supporting it is dynamic and exciting. Godtear was competing against Skytear for my money initially, but my partner has zero interest in the deckbuilding, and unless a friend or two dives in with me, it won’t technically be as fulfilling as it could be so I dipped into both. In short, this one is as fiddly as you want to get with respect to the heroes fielded and their associated decks, but it’s also a lot of fun just casually. Each hero has an associated base deck, so you can just play those straight, and the dynamics of the MOBA system really make for exciting decisions on the field.
It’s worth noting that Skytear really doesn’t offer much in the way of deckbuilding out of the (starter) box. This doesn’t hinder the gameplay experience at all, but it’s worth mentioning if that would be the primary appeal straight away. So far I’ve added the Outsiders expansion just for more variety in the domes, but I like the gameplay loop enough that I’m likely to dive deeper over time.
[EDIT] Just to tack onto what @bengeile noted above, that’s a huge consideration I failed to note. The price to entry for the full Godtear experience is about triple that of Skytear. Hard not to mention that!