The point here is, that most of the bitcoin owners are not known.
You are comparing a best known precious metal, that has a history of thousands of years of ownership and that's biggest stockpiles are registered, to an cryptocurrency with a history of 5 years with most of it involving drug trade and without virtually any registered ownership.
When you seriously believe that it's a suitable comparison, then try to read the same thing over couple of more times. If that doesn't help, then give yourself a good pat on the shoulder and rest with certainty that gold is just as fragile as bitcoin.
You don't answer my question, are large particular gold holders documentated in a database?
Yes they are: http://en.wikipedia.org/wiki/Gold_reserve
Are you ready to give yourself a good pat on the shoulder, that there probably are also a lot of secret gold storages that was digged by The Annunaki while enslaving the human race, and therefor... gold is just as fragile as bitcoin! What makes gold especially as fragile as bitcoin, is that it also has lot's of intrinsic value in electronics and jewelry.
I bet all the big shots in Wall Street see the things just as you.
So, nothing to see here, nothing to worry about. Bitcoin is as strong as gold or god, or an golden god!