Obviously you did a lot better with Sonic than Ness. That doesn't mean you should drop Ness, though, even though I believe Sonic is a better character than Ness because of his speed, tactics, off stage game, and recovery. With Sonic, you spaced yourself better, and you sort of applied pressure through spins, which typically works against most players, because initiating a spin could mean you're about to spin at them and they want to avoid damage any way they can, thus, allowing Sonic to possibly go for a free grab. I guess feinting wasn't necessary here, but what that is is simply spinning in place and fooling your opponent into believing you're about to come for them when in actuality, you're not. I mean, you could, but it's kind of a mind game in itself. I'd try that out the next time you face someone without a projectile.
Sonic is a completely different character than Ness. Both have their own playstyles. I think a lot of the reasons you were able to get in close with him without repercussion was because your speed. It gave you an advantage that Ness doesn't have. More pokes would be better with your Ness. I mean, you did it with Sonic's f-tilt against Roy's shield several times, and it worked. I understand Ness has shorter legs, but don't dismiss his jabs and tilts. They can be useful. Going back to Sonic, you did space yourself a lot better. You didn't put yourself in a position where you could just be destroyed. You racked up damage on that Roy's second stock before he even removed yours. If you can do that with Sonic, try to apply that same tactic with Ness. Space yourself more, don't fall into your opponents attacks, and you're kind of set. When I fight people, sometimes there are certain attacks I'd like to use, but during the match, I have to think, "Would that be a good idea? Will it put me at risk?" In a scenario, you and your opponent are close to one another and both of you have shield up and aren't even facing each other. What would be the best option? A reverse pivot grab? A reverse f-tilt? A reverse f-smash? Rolling, running, jumping? Realistically, probably running. I'm not the best player, but when going against your opponent, you've got to actively think and try to find a pattern in their game play.