Here is a picture of both sets (I'd paste the images here but they're both huge and don't want to blow up the forum page). There are...a lot of similarities in design; I had looked some photos up originally thinking that my original assessment wasn't quite fair, but honestly, a good number of things seem "borrowed" from the HA set. Not EVERYTHING, but in particular the chestplate/coat area and the greaves are strikingly similar in design, and the weird strips below the little ADS dongle thinger are taken from the Ironworks fending armor, just moved from the back to the front.
HA Fending set
HA Recolor of Fending
I can't wait to see what recolor of the Dreadwyrm Robe of Casting we'll get, and thank god I don't have to farm the mats for that dyeable HA healer robe, I can just wait for those contests to come and go!
But you know, at the end of the day, these contests are fun, and it's nice that the devs do them, even if I don't like the outcome. Even though I still maintain that there were better alternatives in the runners-up, I do feel like the developers approached the contest from a way more objective eye than the hairstyle contest, which I feel was largely judged by the community's opinion of the artwork, and not the actual hairstyle designs.