I actually disagree with Frontier being a great season. I mean it was a decent season, but Tamers is my all-time favourite, followed closely by Savers (though the original two season are very close behind as well). I haven't watched Xros Wars because I want to wait until the second season's conclusion, but it might be good (if the evolution mechanic isn't completely stupid).
Rambling about my favourite Digimon season aside, Digimon wins over Pokemon by a landslide. Sure, Pokemon has excellent games, but Digimon was my childhood. I didn't get into Pokemon nearly as much as I did Digimon (perhaps my country of residence had to do with this), and ... Digimon was just really inspirational as a series for me, while Pokemon remained simply an anime / game franchise that I had a mild preference for.