I hadn't done the maths as well as Nine has but a quick mental calculation when I saw this told me it was over 40 fights per day.
I am going to buy some souls before it ends anyway so I may as well get more active in PvP in use the Ironite I was going to spend on Souls and get them this way and probably learn something about PvP. The only thing is that I suck at PvP (which is why I have only been doing the minimal 3 per day) so I will probably get my backside handed to me on a plate this week. I would say my current team is only semi decent. The annoying thing is that I got some decent PvP characters from souls a few weeks ago. The issue is I don't have the power up runes for talismans. I am pretty frustrated about that to be honest