XML file compare - ignoring file structure

I am looking for a generic way to compare the information in 2 separate (xml) files regardless of the structure of the files.
What I need is a way to check the two files. Evaluate if the data is equal and reflect (report) only the discrepancies.
e.g.
File 1============
Dear
John
Reminder
Do not forget the meeting
============
File 2============
Dear
John
Do not forget the meeting
Reminder
============
The script I am using only does a 1-2-1 element comparison - so although the information in the file is equal the test results in a failure because the elements appear in different places in the files.
Any help is appreciated.