"Low" and "high" PageRankX

Does Google differentiate between "low" and "high" PR5 values in serps?

[WebmasterFisherman]

Lets say we have some abstract 1000 *points* as threshold for PR4 and 10000 as threshold for PR5.
Two competitors bid on the same keyword.
All other variables being absolutely the same, competitor X has 1001 *points* and competitor Z - 9999 which does not "visibly" differentiate them on the toolbar anyway. I'm sure google will still give preference to competitor Z in serps. To the best of my knowledge this is how they rank sites with identical PR in Google directory.

Any ideas?

[doc_z]

Of course, real PR (and not toolbar PR) is taken into account for the ranking algorithm. Therefore competitor Z will rank higher.

[WebmasterFisherman]

Thanks

Sorry for the silly question!