Nope i don't see it happening. The way it goes, the supernovas will be rivals in terms of accomplishments rather than versus fights. While Strawhat/Heart pirates alliance target a yonkou, Hawkins/Apoo/Kid target another and thus increase their already growing fame. Besides, the supernovas are rivals to Luffy. I don't see a supernova captain ever fighting a subordinate. At best we'll see a Killer vs Zoro, but that's it and eventhen like mentioned above, they will likely rival each other in terms of accomplishments if at all