They don't have much difference in quality. It's about 20-25 skill points and the first one is (for now) faster trainer than the other. He gets about +80 in 3 bars practice match while the short now has +55.I would keep the 2nd one.... he is a scout... has better stats than 1st....
With an extra training and my green packs I can have him in the new season as a scout.