While I understand the intentions of your edits, they did make the values harder to read. Defiance's Shield Splash to nearby allies should be kept to the values right of Defiance's description, although this will cause the text box to be unusually large.
Therefore, AnataBakka's revert is justified. If you want info about how much shield allies get, I recommend putting it in the Ability Details (the tabbed section), not the ability description as something akin to the following: Shield gained as a non-targeted for Defiance gain 21 / 28.5 / 36 / 43.5 / 51 + 9 / 21 / 45 / 63 (+ 33% AP) shield.
I do notice that the way that AnataBakka handles edits is to perform something akin to an edit war, without giving much for reason than brief explanation. I do wish for them (and if AnataBakka sees this, this is my suggestion to them) that they treat these edits with more care than simple "oh this info is incorrect, let's edit" and at least attempt to explain in the edit description any issues or message the involved parties without being dry.