WEED WAR - who would win?

How about this for a plan to get rid of all of the Creeping Bellflower in my front garden:

I pit it against another well-suited aggressive plant that I like better, like Obedient Plant (left). Since the bed is edged all of the way around we could consider it a cage match...

  VS.   

In a war between these aggressive beauties, who would win?
Lay down your bets.