Big pimpin???not so much!

So I'm building a "B" cross bike. On the cheap. Basically, when I got my new frame I sold my old one to a friend. Well, I ended up buying it back and am building my old cross bike back up as a pit bike for next to nothing money wise.
But just when I think I'm big pimpin stylee w/ a "B" bike, I peep this picture of Neils Albert at the Koppenberg Cross. Now my B bike will be distinguishable by it being a different model year, different color and totally different set up. But big Pro's have their bikes identical, so they can start on one and finish on another and not tell a difference. Due to this (and for the sake of the mechanic's dealing with their bikes) they put numbers one the headtube to tell one from another.
Long story, right? But if you look closely at the pic below, you see the Neils', bike has "5" on the headtube indicating this is not his "A" bike nor his "B" bike, but his "E" bike. Meaning he has at least 5 bikes in his quiver! Craziness.