I was playing a dual nob biker list and absolutely got wadded up by a list similar to this. They had three deff rolla battlewagons with two trukks behind it. They had nobz in one of em, meganobz in the second, and tanka hunters in the third. They drove towards me on turn one, on turn two they drove forward, got out, called the waagh, assaulted, and the game was over.
After that initial charge I just didn't have anything left. The guy made it to the top couple of tables for several games so if you play it right this list should do you well.