My LS has been keeping track of stats, unfortunately we haven't been keeping track of 1, 2 or, zero horns being broken, but here is what our drop rate is looking like. I find it absolutely ridiculous that the zero drop rate is this high. To note, we almost always have 1 horn broken (if horns even effect drop rate); rarely having both broken.
This does track double drops, but even more eye opening are the attendance to item ratio. Some people coming just a couple of times and already getting what they want while others have near perfect attendance and don't have what they want nor as much.
This is out of 134 attempts.
Ridiculous. Don't know how this hasn't been patched.