Those that say it is are not talking about the games, which is an unfair comparison. In general, though, it's an unfair comparison, as you're talking about one monster franchise with younger kids in mind, and another that has preteens and teenagers in mind. It depends on what you're looking for. That being said, I think Digimon is less imaginative, it's not nearly as diverse as pokemon. The only quality story you'll find in pokemon , though, is either in MD or is fanfiction.
I love quality story, but if Cyber Sleuth has taught me anything, it's that you tune it out after a while. It's only good if you're not seeing it over and over.