First, as for myself and I think most sports fans, we don't think of Emmitt as the king of running backs yet, nor do I think we ever will regardless of what records he broke. Considering he also did it somewhat at the expense of his own team doesn't help.
Dickerson's record is almost broken every few years or so. I believe the idea for this list was to show stuff that will be really hard to break ever again.
I don't like Bonds being that high as McGwire breaking it was a MUCH bigger deal, but his own record was broken so I guess he didn't qualify.
Jordan's spot is perfectly acceptable. When will we see someone win NBA Finals MVP six times ever again, much less in two groups of three?