Magikarp, I agree 100%.
They should at least give us back prepatch req. Now my fav weapons cant be used with my fav agistacking build, unlike prepatch -.-
And I have to use Niuweidao instead of Elite Scimitar... which a) is worse b) doesn't fit my style 100%
Fixed. Sorry but this was needed for too long and it's just sad you did your build wrong because of the prepatch reqs.
On the topic, although nerfing the overpowered weapons is what we want, it is not possible to measure the OPness of something. It depends on so many internal (speed, damage, reach, cost, animations...) and external (maps, opponents, classes balance, equipment trends, tactical situation...) factors it is completly impossible to tell what is and what isn't OP.
Trying to balance equipment on the base of their effective "power" is just like trying to tax people based on their "kindness". Maybe it would be better, but if you can't measure what you need to say whether something is right or not, then it's not doable.
Average use, however, is extremely easy to get (devs have graphs about that, those were allready quoted many times). It is not a perfect appraisal (google traduction, sorry) of the imbalance, but not that bad neither. It's based on the assumption that a good part of the cRPG population will be attracted by weapons they do better with, and use them more often.
Just imagine there was a completly OP weapon capable of oneshotting any enemy at range without aiming. Allmost everyone will end up using it (before quitting, obviously), and it is a good clue about something fishy going on with that weapon. On the other extreme, a completly useless weapon isn't used much. Just take the sickle, I rarely even see peasants using that, and in fact it's not OP at all. People roleplaying a sickle warrior are... hum... I think I'm the only crazy guy that created an alt to do that.
Now, there is missing information if we only consider the part of players using a piece of equipment. For example, an extremely imbalanced equipment (i.e. Plated Charger, although it doesn't seem like it is so overpowered in combat, it is when used by a good cavalry) that costs a shitload of gold will not be used much, but still is OP if we only consider someone using it in a particular battle. It's good not so many things lie in this category.
Addendum :Furthermore, because others pointed it out, nerfing by overuse is the way to reintroduce diversity. It was lost when leveling became so fast anyone could make an alt of the latest OP thing or make a clone of you in two days. Nerfing overused items is slow but it can't really go backward. It will force people to decide what they like and will lighten their personal playstyles, now hidden behind the obvious weapon choice.