Uh, I hardly ever used a character outside my two mains and my secondary unless I am going to complete a challange, so it's not like pose myself the problem, it just happens that Ganon fits perfectly how I play, while others don't, despite him having few things better than them, that's the butterfly effect.
Let me explain it better:
Ganon has been designed as a character that is based on a game of the mind rather than else.
His damage-per-hit, his menacing advantaged state and and even his animations are well known across the web, and in fact he is a prime choice for For Glory videos.
This is well known in the mind of the opponent, and acts exactly like it was Fou Supuporuku, hitting the sub-conscious and giving orders of "don't overcommit" and "don't do unsafe things". That's why even in For Glory people are aware of Ganon, their mind translates what I wrote above in rolling from one side to the other of the stage most of the time.
A mind in this state constantly puts effort into the afermentioned orders, this gives high unstability, and every projectile powershielded, every combo taken or any rage added adds more and more pressure to the mind, that's why, when Ganon uses the "surprise ************", not only it has the classical effects (slower reaction time, from 12 frames to 30 and panic reaction), it also adds the final hit to the pressure and shatters the opponent's mind, and that's why they have trouble dodging an UTilt despite it being like frame ~81, assumed that they don't lose a stock in the process, everything becomes dangerous from Ganon, that's why spaced and timed UTilts on the ledge always have as response either a timed get-up or a ledge jump, and they try to punish it more times than not.
Being able to become esponentially more dangerous with the flow of the match is something that no other character is able to do, and I also thought that any Ganon user already knew it, and for this same reason Sheik and Rosa match-ups are what they are, because they can just throw safe attacks around and is Ganon the one to watch out to not overcommit.
Hope to have been clear.