I've been using the datacenter check at http://www.mcdar.net/Q-Check/datatool.asp and I wondered what the varied results actually mean? In other words, if I have a higher pagerank on one then I have ever had before, does this mean my rank will be going up in the near future? My site is www.thetailsection.com
We may be in middle of pagerank backlink update. Wherever that happens. results across datacenters tend to vary. Take a wait and see attitude. In the past we have seen updates and rollbacks. If it indeed is an update over time the datacenters will begin to show same pagerank and same number of backlinks. Hope your higher pagerank holds.
Probably this page is the same that you have tested but these guys (http://www.seochat.com/seo-tools/future-pagerank/) claim they can give the Future PageRank. Maybe you should test with your site to see the results.
For the record this tool is much faster than the url I posted initially. (also more datacenters are showing my increased pagerank. woohoo.)