Of course you can do your development time in WRC2 if you have the budget. The problem just is that you're expected to have a certain level in WRC2 and if you don't have it, you're just perceived as slow. Also, the competition is tougher. Is it better to be ERC/BRC champion than fifth in WRC2?

I think Bulacia is not yet ready for WRC2, but Rovanperä is.