Jiggz can just slaughter Ness in the air once she gets inside.
Yes, because Ness doesn't have a super speedy aerial Nair with a hitbox covering pretty much everywhere on him that can be performed 2x in a single short hop that also is good at getting people away from him like Luigi/Mario can do with their's.
Saying Ness doesn't have a good out of shield option doesn't work when he has an Nair that is better overall IMO than a good % of the casts.
All of Ness' airs are awesome overall actually. ^_^
None of his aerials have enough disjoint to keep her out, and once he's off stage he's toast.
Yes, because Ness doesn't have ways of mixing up his recovery.
-2nd jump goes as far as PKT2 w/o hit and using Fair to up the distance, oh and you don't have use it 1st, keep that in mind.
-PKT2 can be used pretty much
anywhere if the Ness is good at it "like me" and can be fired high and low very well unlike oh say things "like" Fire Fox/Bird for recovery move comparisons
-Can stall his fall with PSI Magnet, and can be used more than once as well, overall it is a good stalling tool IMO compared to some other ones in this game, not the best of course, but it isn't bad.
It's not like Jiggs has a FLUDD/Water gun (lol at those being a threat to a smart Ness), a cape/mirror/counter (not so much lol here, but still able to be workable), or low angle knockback aerials, but at least she has 5 jumps with a kill option overall.
His PK fire is total garbage, and that's probably the only thing he has to really keep Jigglypuff out.
I've said this before and I'll say it again:
PKT>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>PKF
PKF is only useful for low grade stuff or once in a while screwing around with things, and overall I don't see how you'll trap Jiggs that long with it.
Even if those moves weren't good killers (Which they are), all it takes is getting Ness off stage and we have an easy kill.
Let us look at some stuff really fast:
Rest:
-Ness can kill Jiggs at like 30%
-Jiggs only true hope of landing it truly is Dair with a trip or hopping the Ness makes a big error in his spacing/timing so the brawl traits that rest has that do not suck (frame 2 with invulnerability at 1) can get in
-However, Ness is a small "middle weight class" target and needs to be past 70% before Rest will KO. Whose attacks make his hurt box overall very small on average.
The thing is overall very risky to hit with for this match.
Dash attack:
-A sweet spot at the start of the move that has to have Ness at a respectable % before it will kill anyway unless DI is bad/position is bad prevents it from me saying it is really good
-A miss could cost you in cool down time overall I guess, it isn't like Ness' dash attack where the strong point is at the end and so a miss won't cost Ness much overall if used right, it is at the start.
DACUS:
-Said sweet spot is at the start of the Usmash at the back side of Jiggs, the only way I see this hitting is if Ness is rolling, which shouldn't be happening much.
-Said sour spot can still kill, but it won't be for more respectable %, and considering how the strong spot was already at higher % than rest, this isn't good IMO.
-At least this move and the dash attack work well with each other, and Jiggs has a good grab as well, even if there isn't anything to follow with it.
Sure you can say the kill moves are good, for Jiggs. But it isn't even close to Ness' kill moves in power and performance.
6:4 Ness IMO