We have a source that we know pulls information from the official armoury. Unless you can prove that it is inaccurate, then yes, we do know that not a single person in the world on live realms has one of these mounts.
Maybe I am wrong, but wasn't it proven way back in thread one that guildox takes a sample of the player pool in armory or something? Seriously, not stating it is the case, but I seem to remember someone involved closely with guildox stating something of the like. To be honest I didn't really follow it that close since I am at work
Here you go, a direct quote from someone at guildox:
"By Polar 4 days ago
My friend, you really like your mounts :)
First off, thanks for all the feedback and suggestions.
The popular mount list that we just launched is a first-cut of all of this. We have taken a statistical sample of our database rather than crunching through millions of player records. This is why you might find a few very, very rare mounts not on the list yet. I say "yet" since we are re-sampling every day and the list will grow and improve over time.
Could you list a couple of examples that are not on the list yet? I will use this data to dig a bit deeper until we find some.
As for filters, yes, we have some plans to add a few filters in there. They may not offer every choice on your list but they will help narrow the results down somewhat.
As for your comment about 95% of characters with the Abyssal Seahorse - we are looking at all the mounts of any given max-level character and this includes the account-wide mounts. As you know, the Abyssal Seahorse is picked up by completing the first few quests at level 80 in Vashj'ir. Have 95% of players done the start of Vashj'ir on one of their characters? It seems to be about right to me. In fact, I thought it might have been a little higher than that."
I am sorry, but using guildox as your definitive proof also doesn't hold up.