Armaldo --> Ononokusu makes just about as much sense as Wartortle --> Torterra. Seriously.
Well the kid has a fair say to what he wants.
And I could see how they look similar in the armor/ body stance, but the color scheme just strikes me as incompatible. I'm aware of evolutions not having to look like their prevos (see: Octillery), so it is a possibility, nothing more.