After doing a BG with the OP, I can say that their damage is indeed 25% or better. However, I also can say, without trying to be insulting that your other damage is quite low
https://imgur.com/2J6yAfw
I truly mean no offense by that but something is amiss here and it seems to be the lower ilevel gear. I do know that your storm strike should be hitting a lot harder than it’s showing.
This is a perfect example of why gear is important. I am more than willing to point out a few upgrades such as the AB vendor in Arathi Highlands which will upgrade your belt and feet for 2 marks of honor if you have them. They are account bound so if you have some on another toon you can mail them to any character.