Ah okay, well TF is an insane weapon STILL to this day, i mean the raw white dmg sucks but check his out:
http://www.lossendil.com/wws/?report=p6w6lk51gmvqg&a=7
Combine white dmg + thunderfury procs from it and check some other Najentus kills, nothing is even comming close to it, so yeah for TF + WF its a bigger TPS increase.