this argument is very strained. I don't know if BC/Casey are trying to prevent this so called "controversy" with their declarations, but ultimately, any knowledgeable fan wouldn't think for a second when choosing the starting guy. It's even irrelevant (to some extent) how they do in practice, lowry is clearly the superior player, therefore he's the starter.
This is as much a controversy as westbrook over harden. Both PGs, not THAT far apart in value, but one is clearly better and there's little chatter about who should start for OKC. It should be the same thing here, except Toronto media is very adept at stirring the pot ...