What matters in the anime universe is the bond between Pokémon and trainer. I believe Pikachu is best described as that so in the end, it will be Ash + Pikachu being the best. Kinda how VS Drake ended, Charizard showed his power and did great, but in the end it came down to Pikachu
But Ash also has close bonds with other Pokémon like Charizard, Bulbasaur, Squirtle, Infernape, Sceptile,etc. So no, there is no "equality". There's a big difference between Charizard and Pokémon like Totodile and Oshawott.
But fans do get crazy over Charizard. But that craziness goes both ways. The side that thinks Charizard is unbeatable and should KO everything and the other side that gets annoyed by this, so they hate Charizard.
There needs to be a balance. Charizard isn't invincible, but he has a very significant part in Ash's journey to be a Pokémon Master