LOL How much do you even know about Digimon?
Basically nothing. I was only just young enough for Pokémon. I know that there was a cartoon, and that most of the monsters seemed to be tiny 90% of the time before sprouting new abilities as the situation required. I can't remember any specific names, but I think they all ended with "-mon".
I'm fairly sure there's a later-generation pokémon which manipulates time too, so it's silly to compare those kinds. They just mutually exclude each other. Besides, creatures of unlimited power don't make things interesting. It's just laziness filling in for creativity and it invites dozens of plot holes.
(Edit: Dialga created time, so if we're bringing ridiculously powerful and philosophically questionable ubercreatures into the fray you don't ever get to have existed.)
Weren't digimon supposed to be relatively intelligent, rather than just animals like pokémon were? Because if so, why the fuck were there still humans in that world? Pokémon explored what happens when you create something powerful and intelligent, and the answer is that it takes over the world and wipes out mankind unless you've got someone on hand to teach it how to love.
Also, look at this:
lol, XD, I was deciding for Digimon CAUSE of the monsters ^_^
My faved Digimons were I think Imperialdramon Paladin mode and omnimon ^_^
LONG LIVE DIGIMON!!!

Those aren't monsters. They're robots. And they are therefore inadmissible, along with whatever other aesthetically similar digi"mon" are being quoted here.