Um, just a bit curious. If you're Emerald Vibe got chewed up and you are looking to replace it, why not just get another Emerald Vibe?
Anyways to answer your question the Lanebreaker is a completely different reaction, stronger core, lower rg, higher diff, stronger cover. Although the lanebreaker is a great ball, if you are looking to get it in place of your Emerald Vibe its not even close.