eh?
-95 on a weapon (phase needs 65% ias to achieve this)

gives you 7/4 fury or 6 frame maul

-115 gives you 6/4 or 5 frame maul

-140 gives you 5/4 or 4 frame maul

giant threshers only require 80/105% ias's for 5 and 4 frame mauls however.