Lucas is harder to Edgeguard, Hard to punish auto cancelled nair, PK fire is better for zoning(kinda like a projectile version of Kirby's Bair/MK's Fair etc.) Lots of PSI magnet mixups for approaching. Dair-Dtilt-Death lock at >85 on basically all characters who dont know how to DI it. Zair DJ cancel wavedashing. Still gets grab released, but harder to do since it needs to be buffered. PK thunder gimp potential. Better tilts and jabs. Just as many kill moves, if not more, than Ness. Nobody uses PK flash or PK freeze competitively anyway...How so? Ness' neutral game completely outclasses Lucas', not to mention Ness actually has a semi decent approach with his down angled PK fire, fair and dash attack, his aerial game in general is better and even though he doesn't have as long of a grab range as Lucas his grab is much less punishable and his bthrow kills a lot earlier than Lucas' dthrow, also Ness PK Thunder is better and PK Flash > PK Freeze. I definitely think Lucas is more fun to play, but Ness is objectively a much better character.
I dont know, its looking kinda close. xD. When I say I think Lucas is better than Ness, I dont mean by much. I think they're about the same on the tier list.