It seems almost as though Davies and Hughes are competing too much with each other to get the limelight, which is good for competition but can be damaging. As said further up, greediness in a striker can only be good, but when appropriate. On more than one occasion Davies could have set up lee hughes to score so being too greedy can effect the team.
I think to an extent, Davies' attitude when being subbed up summed it up just walking in to get changed rather than watching the rest of the game.