Yes, I know what you mean. I was looking at it from this point of view but you said "good same as". I am still trying to compose something to say it is comparable to BiS. But, then really activation of onslaught is sometimes really random. For example I can hunt for 30 min- nothing will happen and then in next 5 attacks it will get activated 3 times (I had this situation few times). I quess the best would be to compare damage stats from for BiS and next item - Lets say Souleater tier and Falcon Battleaxe tier 4 on Cobra Bastion as they take 100% for both damage's for an hour. But, then again you also need to include into account - waste of supplies used (potions) and in process of making it and not everywhere you will be able to use Battleaxe or Souleater. So now you can try to compare Souleater vs Cobra Axe as it is same element. Then sword wont have same element in category 4. But then also again to make Cobra tier 4 how much will cost you? It is many things/ variables to consider - so better to rephrase this question more into " which weapons on which tiers would provide same damage same or better as BiS weapons". Just a suggestion ;-)