How to script data in deterministic order
I personally would use a tool (as indeed I already use) , such as are sold by Apex, Red Gate, Toad, and others.  These could be used to script only the rows that have changed.  That would make your looking for changes very simple indeed.

If you are looking for a free tool you might examine http://opendbiff.codeplex.com/.  I have not personally used it, but some people find it useful.  (There are doubtless other such tools in the public domain.)