Leomon makes his blog debut and he’s up against Pikachu! Pikachu’s speed would quickly overwhelm Leomon’s regular forms, but once he hits his higher up mega forms, then things get ugly for this thunder pokemon. Pikachu takes a loss in this round, but he’ll be back. Leomon wins.
DReager1.com 
Not sure if Pikachu can defeat Leomon since Leomon dies always, even if he Digivolves.
That’s true, Leomon has a lot of good plot armor
Yeah but still Pikachu could stand a little chance
Definitely, it should be a good fight