I'm not a fan of 'Prequelizing' the OT, and this attempt, although bold, didn't really work on either an emotional or technical level for me.
Perhaps the editor should have conformed to one of the film conventions for flash-back sequences by at least doing a bleach pass on the PT footage to make it look different enough to draw the viewer's attention.
Also, it might have worked better if the viewer was able to see more than a flash of the PT footage, though this may have required some clever editing of the sound, as well as the pictures.
Unfortunately it just reminded that rather than making clever links between the PT and OT, Lucas simply re-cycled ideas.
As always though - thanks for posting!
JD