This isn't entirely true 2x slow weapons can give you a problem as well for example if you need to use an attack asap a faster weapon with a high hit rating will gain more rage than a slow weapon. but i do use both 2x slow weapons but also have a fast weapon for sticky situation so it really depends on how you play....

"not saying two slow weapons are bad just saying it depends on the players preference"

Good point yea, if it wasnt for the fact that I can barely reach 50rage and even if I use heroic strike almost every MH strike(wich I wanne avoid, treatcap FTW) I stil have to much rage most of the time. And a slow/slow or Slow/ast give equal rage only with low hitrating it isnt as bad if you mis a fiew times cause you hit faster, if you mis 4x with Slow/Slow you'll feel it.