I spent a couple of days during the event farming greens to kit out my new Ele and extras for guildies. I was after specific items, once I've gotten the number of items I wanted I moved on to the next boss on the list. And, yes, I was sad enough to keep a tally of actual kills for a green to drop.
Soloing
2 x Rajazan's Fervor; dropped on the 9th and 29th kill.
2 x Arbor's Earth Staff; dropped on 5th and 14th kill.
2 x Zarnas' Wrath; dropped on the 16th and 43rd kill.
3 x The Stonereaper; dropped on 23rd, 35th and 39th kill.
(For the 2 above, guildie joined for duo-ing after the 25th kill).
Duo-ing with guildie
2 x The Windcatcher; dropped on the 5th and 6th kill (both times for guildie).
Duo-ing with guildie and 3 henchmen support
2 x Amadis' Air Staff; dropped on the 12th and 19th kill.
2 x Kenrii's Sorrow; dropped on the 1st and 2nd kill (luckiest one, dropped for each of us really quickly).
1 x Koosun's Fire Staff; dropped on the 4th kill.
I'm happy that I manage to get the items that I wanted, but to be honest, I didn't find the drops to be any different to other times I've farmed for green items.