file1     file2
---------------------------------------
    x      x    /              
    x      x    /dset          
    x      x    /dset_filter   

group  : </> and </>
0 differences found
dataset: </dset> and </dset>
Not comparable: </dset> or </dset> is an empty dataset
0 differences found
dataset: </dset_filter> and </dset_filter>
Not comparable: </dset_filter> or </dset_filter> is an empty dataset
0 differences found
--------------------------------
Some objects are not comparable
--------------------------------
Use -c for a list of objects.