I am not sure why this was made, but now there are armor with the same weight that others that give less defense. When it came out, I was thinking balancing the armor for their weight was a very great idea, so players were not obliged to sacrifice armor strength for the look of items. As it was removed, when optimizing equipments now there's only a few armors(especially helms) that will be really worth it and many items are just less good. I think most of players saw their armor just gain weight and more penalty. Gonna cost a lot changing that gear...
Anyhow, I think this was a bad idea, I don't know exactly why it was made, it just gives less choice of equipments or forcing a sacrifice, being less fun for players. I don't think rounding the armors weight brings anything. Would be great returning to the other last idea.