I misread PA. (IMG:[
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The fact is that the more you advance in PF the more drop bonus you get, i seen most player say that the last 200 rounds of PF are worth more than the first 800.
So teorically if you can do a full PF without problem is is possible worth more than 10 IW even in terms of PA but the real problem, as other say, is RNG.
You can get 3 PA in a 100 IW rounds or 0 over 500 rounds (i got 2 PA in First Blood, and 0 from all the top 3 arena).
The same happen to PF, i have done a low amount of them, just 10 or so (too long, too boring, it made me near leave the game again), but i got a wide gap on PA drops, like from 5 to over 10 (with Archeologist 10).
The best way to get Artifacts is Archeologist 10 and get all the RE you can every day.
Then, if you play a lot and normally use ED to recharge do complete PF, it's worth it, if not go with the top 3 arena in PFUDOR, do IW only if needed due to the lowest drops of other things (IW is made expecially for increase the equipment power, that the bonus you get).
Lastly, as Uncle Stu say IWBTH and PFUDOR GF yeld probably near the same artifact drop ratio cause the total bonus from one another is really low in difference, it's just that PFUDOR offer a best drop ratio overall, so one player have to select carefully the best difficulty to use to get the max out of it.
This post has been edited by Maharid: Nov 4 2018, 22:18