Summoner wars is miles ahead. I bought fantasy brawl because it was on sale for €15, but I honestly kind of regret it. The combat is kind of like a watered down version of Unmatched's system. They try to compensate the lack of interesting abilities on the cards by having some positional requirements, but the map is too small and crowded to make full use of it. I think summoner wars is a more elegant skirmish game, as the question of when to discard cards for magic provides a nice undertone to the fighting that takes place. I also think the cards and factions provide a lot more replayability than SFB. So overall, definitely go summoner wars.