User blog comment:Black leg hunter/New supernovas/@comment-4117216-20111222214711

I think there are a lot more supernovas than post time skip because of what whitebeard said.

He said one piece is real. This erupted throughout the world so more pirates set sail than before. Where are they now? In the New World. No reason to chill around saboady. We saw Zoro slice up a ship of a big time pirate when he was first introduced. For all we know his bounty could have been high!