[sciurius]

You are right about the difference in the song files, although that is not part of the problem.

An identical file, this is as close I can get to a near identical display on both tablets.

   
   

As you can see, I need to reduce the size of lyrics, chords and so to about 80%.

The Text Display Settings dialog on the right tablet is significantly (about 25%) larger than the one on the left tablet. Same is true for the icons.

So apparently there is some internal base value (setting?) on the right tablet that is 25% larger than its counterpart on the left tablet.

I installed DevCheck and compared the results.

   

It is peculiar to see that the left tablet has resolution 1280x800 and density 1280x800dp, while the right tablet has resolution 2560x1600 and density 1138x711dp. The last density is puzzling...