Companion Equipment

Companion Equipment is just another kind of equipment that only serves the purpose of giving you item level (great in regular content, useless in scaled content) and rebalancing your stats towards those that are the most useful to you.

Considering the fact that there are only 5 out of the 12 epic companion gear from bounties in Sharandar that have double offense slots, and that the chance to get an epic one is about 1 on 40. I takes an average of 288 bounties (144 days on a single character) to get 3 of the double offense companion gear. On the other hand, it takes 12 days to complete the Stardock questline in Undermountain to get a guaranteed double offense companion gear with the stat of your choice... The only drawback with the stardock questline is that you can only complete it once per character (but the companion gear is bound to account and can be shared with your other characters). Pretty sure the drop rate is much better in Stardock expeditions in the first place.

You can also get higher IL companion equipments from newer campaigns and campaign shops.