Dealing with multiple layers of routers

[Michael ODonnell]

> I will probably get around to playing with this on one of my
> personal V4 WRT54GSs, but I'm disinclined to give one of these
> to the company, given how hard it has been for me to find them.
> (I'd really like to own a V3, the last max memory model, but I
> haven't seen one.)

I'm interested to hear that you wish you could own a V3 because
when I look at the charts shown here:

 http://en.wikipedia.org/wiki/WRT54G

...I don't see important differences between the V3 and V4.
Are the charts misleading?