I thought it was hirosite, not herosite...

Anyway, in the original timeline, Sylar (who was the bomb) got stabbed by Hiro and regenerated, proving that Claire was dead.

In the new timeline, Claire is alive, and Peter and Sylar both say that Peter was the bomb.

So there are differences... it's just that they're not nearly as big as Future Hiro thought they would be. Hopefully, third time's the charm.

Paul

When in doubt, think about penguins. It probably won't help, but at least it'll be fun.