So you're telling me... that from the moment you unlock it, until level 52, all MCH actions aren't instant, the same as a Bard? And that when you turn on GB your instants suddenly become cast times, same as WM does to a Bard? Let's be real here. The two jobs do have their difference but the similarities are plain to see.
Look I don't have a dog in this fight. I gave up on any of the dps jobs a while ago. I'm quite content to heal. But you're not going to convince me that MCH and BRD are wildly different jobs and that GB doesnt impact MCH in the exact same way that WM impacts BRD.