Should the challengers be a lower BR?

I hear a lot of about how “the challengers have bad mobility without armor to make up for it” and “the gun is very underpowered for it’s BR placement”

so why is it treated as equal to other vehicles? that have better speed, guns, armor ETC is there a real reason I’m missing or is it just a gaijin moment?

idk how to make a poll yet so I might figure it out later if this actually gets traction

(I’m asking genuine questions btw because I honestly don’t understand)