They have the same general guidelines for proper (minimum) pitching. I have not seen a guideline for overpitching. If I am missing something I would definitely appreciate finding out so I do not make the same mistake twice.
this is a good summary: http://www.wyeastlab.com/hb_pitchrates.cfm
what is presented aren't minimums - they are the optimal prescribed rates, with a little wiggle room since we homebrewers generally don't have cytometers to be as precise. so anything significantly over that rate is further from 'optimal'.
Yes, you can 'get away with' overpitching just like you can underpitching, but you why wouldn't you 'optimally' pitch? It does make a difference - not so much for something clean and neutral like 001, but for some more ester/phenol abundant strains, it can have a significant effect since those aspects are restrained by the lack of need for growth - overpitched beer can be bland and 'flabby' is one way I have heard it described.
its sort of like if the recommended pressure for your tires is 35psi, and the max pressure for the tire is 120psi, yeah, you can fill it with 60PSI or 20 PSI, but you ain't gonna like the ride, and the tires are gonna wear out quickly - i'd rather shoot for 33-36 and do it right.
like I said above - you will more than likely be fine, but its not something I would purposely do with my beer.