The reviews will always be bias, if the guy reviewing the game is a Nintendo/Sony/MS fan and that game belongs exclusive to either of those companies, the game will get a high score and vice versa (few exceptions are when the game really sucks, or it's really good). It's really hard to find a non bias game reviewer these days.
As for the game itself, I can see why people are "annoyed" by this game. There is no doubt Pokemon have changed over the years (more species, more Pokemon types, different areas) but for most people, those changes are minimal when you're trying to compare all the games in the franchise.
A hardcore Pokemon fan can talk all day about the changes in stats, types and other stuff, but in the end those changes don't matter for the non Pokemon fan. In a way it's similar to the COD fans defending the franchise for adding more guns.
I have played all Pokemon games, but I didn't liked gen 3 and 4 games. I did enjoy Pokemon Black and White because I felt (for the first time in a Pokemon game) that the story matter and it was really interesting (always reminds me of a more serious PETA lol) and I hope future games in the franchise continue that.
Nintendo and PC gamer
