I would kind of agree with DDD, Marth, and maybe Olimar being even, but Falco is definitely not even. It's definitely in his advantage. What helps with a lot of these characters is our ability to counterpick stages that'll give us the advantage. DDD can't chain grab you far in Norfair, nor can he chase you around in the air. Falco is always forced to phantasm on the stage in Frigate, and his recovery gets kind of hindered in stages like Delfino. Olimar suffers with RC's ledgeless platforms and is constantly forced to jump and move around. Marth I don't really know, but don't take him to Battlefield.
Also, it's important to note that there are some matchups that purely depend on who gains the momentum, for example, DK and Ike. If TL gains the camping momentum and doesn't let either of them approach, then we'll probably end up winning. If DK/Ike are able to land enough hits on us and gain some momentum after that, then they could win it too. MU's like that make me feel like it's even, because the tables could turn either way.