imo Link, Toon Link, Rob, Zelda, Diddy kong (Bananas are from hell), Mario, Ivysaur, ZZS, Samus, Lucas, Ness, and especially Pit all have projectiles that in their respective match-ups are more troubles for Ike to deal with than his match-up against Falco. I'm not saying those projectiles are used more, or that they cause more damage than Falco's overall but rather how they're used is more effective at hurting Ike's chances for winning than Falco's Laser.
... Not at all. Falco can put out his lasers a lot faster and with absurdly little travel time and lag. The safety, speed and 'spammability' of the move makes it a loooot more trouble than any of the other characters (also did you seriously list every single projectile user and say Falco gives Ike less trouble than them all? That's ... pretty absurd.) Honestly, if you're arguing that powershielding Falco's lasers makes the match-up better, every character you've listed has a
much slower projectile for PS'ing.
1. The Links put out a maze of projectiles, but they are clankable, slow enough to deflect and unsafe at close range. Ike has enough aerial mobility, quick draw and a large disjoint, all tools that help him greatly in the match-up. There's plenty of other characters who the Links completely choke out, a lot worse.
2. Mario is the only one that comes close to Falco, but Fireballs being slow and clankable as well as much easier to weave/QD through than the network of hitboxes the Links put out makes Fireballs easy enough to deal with.
3. Oh, I see you left out Wolf, Fox, Peach and Luigi.
4. R.o.B has three angles for a laser at varying heights. It's a pretty good move for sniping, but can't be spammed and needs to be charged. Gyro is also threatening, but nowhere comparable to Falco lasers, especially since catch to AGT/Glide toss is so much easier than a PS.
5. Diddy's Banana's have proper counter-play in this game. Sethlon's Roy exposes how much more manageable Diddy becomes when you can properly deal with his item play. You'll probably never be as good with items as a Diddy mains but it's a necessary skill to cultivate, between bombs, bananas, grenades, gyros, turnips ...
6. ZSS's Paralyzer is hardly spammable and is literally slow enough to run away from. It gets points for being transcendent, I guess.
7. Samus is scary and can choke out Ike pretty effectively with missiles, charge shot and Zair, without even taking into account her other shenanigans. I'll give you this one.
8. Pit's arrows are lol onstage and cry offstage. The trick is always DI'ing in to the stage and early Side-B's. Wall-jumps and going low help out a lot as well.
9. PKFire is pretty good, but good SDI is even more important than good item play. It's part of the match-up. It's also slow enough to run away from, easier to powershield than lasers and has lol range. Dashdancing a certain distance from Ness can easily bait out a PK Fire and allow you punish with good reaction, between Ike's good mobility and quick draw.
10. PKFreeze's biggest problem isn't the projectile itself, which is clankable, not absurdly fast and without great range. It's that it comes attached to Lucas. I might give you this one but PK Freeze is not the worst thing about the Ike/Lucas match-up at all.
11. Razor Leaf might be the easiest projectile to PS in the entire game. And you can just Nair or FTilt it. Easiest projectile to deal with ever.
12. Din's isn't a projectile. If you see Zelda putting a Din's out in neutral, QD up and punish her. You're in considerably more trouble off-stage, but still, Din's are just a better version of Snake's mines with less KB.