Really just sounds like you don't know how to play the match up personally. I wouldn't put Falco as one of YL's top 3 worst. When my opponent chooses Falco, you'll see the biggest grin come across my face cause I'm about to have some fun.
YL's worst match ups top 3 are Fox, Falcon and Sheik in that order. Extend it to top 5 and you have it followed by Marth and then maybe Falco. But even Ganon is way harder to fight than Falco.
Not sure how you concluded that I don't know how to play the match-up. Just because I said Falco is a bad match-up does not mean I don't know how to play it. You're trying to shut down my argument by spontaneously concluding I don't know the match-up, which is a fallacy.
Okay let's actually discuss this match-up (that's what this thread is for, right?). I didn't think I was saying anything wrong by initially stating Falco runs over Young Link and I still stand by that statement, but if you and others disagree, here's my case for why Young Link vs Falco is a terrible match-up.
While
http://www.eventhubs.com/tiers/ssbm/ is still in its infancy, this website provides a lot of accurate data, voted on by users, regarding the tier list in SSBM and every match-up in the game. I agree with a majority of the information that's put up on there.
Here's a match-up chart for Young Link
http://www.eventhubs.com/tiers/ssbm/character/younglink/
The chart implies that Falco is YL's worst match-up followed by Sheik and then by Fox. I actually found this website before I even mentioned Fox, Falco, Sheik being YL's top three worst match-ups (in my earlier post) but the votes tend to agree with me as well. Personally I prefer the order Fox, Falco, Sheik followed closely by Falcon. Those four match-ups are incredibly difficult for Young Link. Marth still beats Young Link but like I said, it's closer to 40-60 while the top 4 worst match-ups are closer to 30-70.
I completely disagree with you saying Falco has a better neutral game than Young Link. That's absurd (almost as absurd as that Ganon comment). It's pretty much undisputed that Fox and Falco have the best neutrals in the game. Young Link does have a pretty high neutral game to punish game ratio (maybe even the highest in the game) which means that YL can play his neutral game insanely well compared to how hard he can punish (we all know his punishes are terrible). I think maybe that's why you think YL has a better neutral than Falco.
So why does Falco beat Young Link?
-Lasers: Lasers can shut down some of Young Link's movement options and ability to pull and throw projectiles. Large stages with three platforms like Battlefield and Dreamland can help alleviate this problem but you're only going to be able to go to one of these stages per set (assuming best of 3 and that your opponent understands the match-up). That means if you ban FD (which is obvious) you're going to have to play on either Yoshi's Story, Fountain or Pokemon Stadium for two more matches assuming you win on either Dreamland or Battlefield. Not saying it's unwinnable but it's harder on those stages (Pokemon is the best choice though).
-Falco's shield pressure: One of the reasons why Fox and Falco run over Young Link is because of their shield pressure. Young Link's nair out-of-shield doesn't work well on shield pressure by YL's top 4 worst matchups (fox/falco have shine and shiek/falcon have jabs that can beat out YL's OOS nair). It's only when you start playing Marth can you actually start using YL's nair effectively out-of-shield.
A good Falco who plays the match-up well understands these main attributes that help Falco beat Young Link. Among these things are Falco's decent ability to ledge guard YL (Only Sheik and Fox are better, maybe Marth) and the fact that Falco out-prioritizes YL like crazy. Fox and Falco are the best in the game at stopping YL's projectile game, followed by Sheik. A Falco who understands the match-up will stay on top of YL the whole match, and will not let up. If a Falco does this, he will win the match.
Just for fun I youtube searched "Laijin Falco". I'm not doing this to try to discredit your playing ability (believe me, we all know you're good and one of the best Young Links) but rather to further understand the match-up. These matches do not definitively sum up the match-up but rather provide some insight on what the match-up is like (I tried to search "Axe Young Link Falco" but couldn't find much on him, probably because he would never play the match-up in tournament; Pikachu/Falco is close to 40-60 and there's no way YL/Falco is any better). Also, this is more definitive proof rather than saying "I played Zhu for 30 minutes in friendlies and they were all close matches".
NOTE: Laijin, I'm gonna refer to you in third person from now on because other people will read this post and this is no longer directed at you
First match that popped up from Pound 5.5 - Laijin vs Fonz
https://www.youtube.com/watch?v=0w6YeTSDj6U
Fonz plays this match-up terribly. The first match, he clearly doesn't understand the match-up because he basically just allows Laijin to pull out bombs and throw projectiles when he should be doing his best to prevent that. He also ends up suiciding at 13% the first game which doesn't help him. So Laijin wins.
In the second game he goes Yoshi's Story, which is a great choice. Prevents Young Link from moving around so much. In my opinion, he still doesn't play the match-up correctly (he also doesn't seem like the most technical Falco) but he manages to beat Laijin. In the third game of the set, Laijin switches to Sheik (definitely a better match-up than YL vs Falco eh?).
Second match that pops up on youtube: Laijin vs Prince Abu from Fight Pitt 4
https://www.youtube.com/watch?v=K55zulDq6zc
First two matches are not YL vs Falco so I'd rather not comment on those. Third match is on Pokemon Stadium, YL vs Falco. Laijin is playing the match-up well. Running away and using projectiles (Falco destroys YL close range). Prince Abu plays the match-up poorly for the first stock. But if you watch the second stock you'll see Prince Abu start to stay on top of YL a lot more. Also, when Laijin and Abu have three stocks each and above 80%-ish you can see Laijin trying to nair out of shield. None of them land. Nair OOS against Falco is not good and you can get punished incredibly easy unless you are 100% sure it's gonna land. Laijin ends up dying his 2nd stock due to a failed nair OOS. I don't think Laijin hits one OOS nair the whole match and loses a stock because of one. Laijin ends up losing the match/set.
The third match that pops up is emoDinosaur vs Laijin
https://www.youtube.com/watch?v=apAGA07ydmM
I don't have time to fully watch and analyze this match but by skimming through it seems Laijin goes 1-1 in the Falco YL match-up but then Laijin switches to Sheik again for the third match after realizing YL - Falco is too hard? Or maybe just trusting his Sheik more.
I can beat a lot of Falco's with my Young Link. Can I beat Falco's who are close to my skill level and understand the match-up? No. Do I believe the best Young Link can beat the best Falco? No. And that's what a match-up is about. What happens when two equal players (ideally high level players) play a match-up and both players utilize their tools to the utmost? I believe Young Link doesn't stand a chance against Falco in this theoretical scenario.
I'm incredibly curious to see what Axe thinks about this match-up, perhaps he could provide some more insight. I'm open to any comments though.