The only difference I can notice is the placement of the screw down holder, one for the water is different than for the fuel. The fuel holder has a strip over the fill hole on the can to keep anyone from flipping the top open and siphoning your fuel but I do not see a lock except the small pin in the shaft where the handle spins to secure it. The description indicates that you obtain a small key lock to put in the hole.
The description states they are horizontal but that is not what the picture shows they are simply placed on the side and not horizontal. By horizontal, I mean flat.