If I recall correctly, the first two months of the season; Kemp and Ethier were going back and forth, and htey seemed to feed of the success of one another. There is always a certain amount of "animus" about the new guy, be it HanRam or Victorino. However, I would bet it all on those two guys in particular, that they just want to fit in and contribute to Dodger success. If it were indeed a situation of "ego going before team", on anyone's part, that of course is wrong!
Of course, I have nothing to back that up with; I am but a a troll!