User blog comment:Mohamed7845/Ultor/Deimos Who is Better/@comment-24144011-20150822194228

Depends on what you want to do.

Ultor's LS is better for offensive squads and Arena, and Deimos' LS is better for Trials, FG, Raid, and generally defensive squads.

Ultor's BB and SBB is better for offense (that crazy Atk buff and crit damage buff tho), while Deimos' BB and SBB are better for Defense and allstat boosts (if you don't already have better stat boost on your team).

Personally, I prefer Ultor because most of the time that I use him on trials, I have a unit that can boost Def higher than 100% (Either Tridon or Kanon), which essentially makes Deimos' buffs an obstruction (except Rec, but who needs that?). However, if you don't have a good Def buffer on your team, Deimo's would be a better choice than Ultor.