i got this bracelet about 3 months ago from a guild raid, won the roll. we got lucky, was first time we ever killed it. i love this bracelet. just got crit AA recently and get crits over 1500 quite often. highest crit is 1759 so far with moonfire nuke. normal damage without bracelet is in the 1100's, with bracelet in the 1200's and 1300's. it is well worth the time to try to get it.
Well I have killed him about 20 times. Drop rates for us have been as follows: Common, Robe. Uncommon, Eyepatch. Rare, Bracer. Have only seen the bracer drop once. I don't know if this is correct, but that is how it has worked out for me and my friends.
I did this camp for quite a few times. The golems hit around the 200s and are around level 53. A group of level 50+ should be able to do these quite easily. They don't add, and are placed far enough to single pull without a monk. When you get to the square, just cross it around the right side with invis and camp near the tree. The massive golem is as massive as the others f not softer actually. I think the rest of them are just hollow inside. I don't see any other reason why it was called massive.