Affinity, that post is very much outdated.
1) Rising Dairs from MK beat Utilts, and if he decides to tornado from right above you, there isn't much you can do except shield.
2) Or he could just go for the edge instead of airdodging to the ground. I mean how many times are you going to eat that Fsmash before you learn it's a bad idea? Also, DC to the ground is better than AD, as it is much harder to punish.
3) No. It is very easy for MK to DI out of the Gonzo combo, and I think he can hit us out of it too. At most, we'll get 18% from it. Dthrow>Utilt is much better (though stop the Utilts at 40%, or you will get Daired).
4) WoP is very useful in this matchup, but not impossible to get around. I'm not sure exactly how to do it, but DJ_Iskascribble has so far almost always made it out.
5) Which is when MK baits your Bair and does a grounded SL.
6) Edgeguarding MK is MUCH harder than that. For one, Drill will always beat out our Bair. For some reason our Dair beats it, but Bair will not. Also, Bair does NOT go through Glide Attack. If well spaced, it will clash with it, which for some reason puts you guys in a prolongued period of freefall (if after a SL, if not it just feels like you guys have a bit of hitstun, which is strange...) and makes you slide forward faster than if you'd just done glide attack normally.
Also, if you come from above or below us, our Bair will not be anywhere near as useful. basically, unless the MK player charges into our feet, we aren't going to reliably gimp MK.
As for the tornado... I played against a MK player I've never played before Saturday. While the outcome is irrelevant (I messed up at the end and got gimped, though I nearly won it), he tried to tornado twice. I Fsmashed it both times. He stopped using tornado. Most people will not keep doing something they see gets punished, so we will not get 'most of our kills' from Fsmashing tornadoes. Maybe one or two per game/set, but I really hope that doesn't constitute 'most'.
Finally, MK can gimp Kirby MUCH, MUCH more easily than we gimp him. Reverse Dair just ***** Kirby.
I'm not saying that it shouldn't be 45-55, because that seems accurate, but that post seems completely wrong. Your matchup guide has much more up-to-date info on it.