I think Lucas is only marginally better or just equal since he fares better when used aggressively. I find that alternating playstyles between cautiously aggressive and defensive is very effective.. Also, his PK fire is incredible at forcing opponents offstage, and sometimes even gimping, better than Ness' since it's got a longer reach and goes straight.
all in all I think Lucas is gonna be right next to ness on the tiers for a good long while.
Also, I was testing lucas' bair earlier and found some weird ledge jank
if you full hop fast fall his bair while facing away from the ledge, you can spike anyone trying to recover
sorry about the quality, dont have any recording hardware/software for my Wii U so it's from my phone
tested on lvl 1 CPUs and I figure it would work on the 1 frame window you have to hit players out of a ledge snap, also should work on anyone close enough to the ledge who hasnt snapped. Maybe it could be done out of a ledge trump by someone competent enough to pull it off? idk.