Never played Godslayer, but I am really enjoying Wrath of Kings right now. The minis are pretty nice and have a great look. The concept art for them is done by one of the former Confrontation artist and his stuff is great.
The fluff could be better, but as ecurtz said it might be due to them shoehorning some existing concept art into make factions.
The rules are simple on the surface but the interaction between friendly/enemy models makes it a bit more complex.
If you want to read one of our local gamers thoughts on it, check out the link below.
http://everystoreneedsone.blogspot.com/2015/07/wrath-of-kings-impressions-guest-post.html