We will also get favorable statments for Luffy, but we can differentiate between him being on his way to surpassing Roger later, and him already surpassing Roger now.
Just because we know a certain character will eventually surpass another, we can still discuss if we've reached that point or is going to happe later down the line.
For example it was odd to me how
@Garp the Fist said that he thinks Oden/Rayleigh are both pretty much equivalent of Zoro in Roger's crew, and at the same time believes Zoro will surpass Oden in Wano.
Naturally that would imply that Luffy also surpasses his equivalent in Wano, so we should advocate for Luffy > Roger by the end of this arc to go with Zoro > Oden.