I am not sure if that is the biggest collection..
I think you should check out Athene(World best gamer) brother collection of game and stuff..
Here is link the first vid, there is 10 vids with going around looking at his collection
Pretty big..
http://www.youtube.com/watch?v=eIWd3gDrMGU
Also look at the vids Swifty at Athenes Brother, there is 7 vids with that..
http://www.youtube.com/watch?v=ysYONg2jwN4