Spamming up tilt in this match-up will do wonders. It demolishes his Pikmin, rather they latch onto you, miss and are running back toward him, whatever. Only a bad Olimar would sit around spamming smashes and grabs all day, but you can pretty much expect that from most Olimar players nowadays. Up tilt will at least keep his side+B Pikmin throwing at bay.
Olimar out spaces us otherwise. His range, attack percentages and knockback all rely on the types of Pikmin he has, so he's often limited on what attacks do what. It's almost a given that Olimars are going to abuse their grabs due to it's long range. That alone limits us on the ground.
In the air, watch out for Olimar's up+B when you're near him because it can smack you out of the air and deal quite a bit of percent and knockback. A defensive Olimar that knows how to shut down Falcon's approaches can make this close to unwinnable for him, sadly. It's not really the smashes that pose a large problem, but the grabs and up+B are by far the most ridiculous things that a character has to limit Falcon. When it comes to Olimar being in the air, spamming up air is good.
My strategy, camping.
Stay away from Olimar and force him to approach, if he throws Pikmin at you, just spam up tilt or something that can safely keep them off of you, or dodge them, even. When he's forced to pick more or they're running back toward him, use that opportunity to abuse your speed and punish him. You won't be able to catch him off guard without at least one Pikmin, but if he's down to one or two, that's still better than him having them all near him.
Spamming short hop air dodge might be good here too if he gets near you. Don't stay on the ground near him, that's just asking to be combo'd. He can abuse his quick follow up options and **** our fastfall properties if you don't stay out of his grab range.
20:80 or 25:75 seems about right to me as well.
