2013 team wouldn't gone anywhere.
Little to no depth and lack of athleticism would have been too much to overcome, even setting aside the personality differences and injuries.
28-12 over the second half of the season with the chemistry just starting to click, a semi healthy Gasol and Howard, a barely healthy Nash, and a MWP who came back 12 days after a torn meniscus surgery says otherwise.
If they played like a 3/4 seed throughout the second half of the season when they were nowhere near 100%, but they finally learned to play with each other, what would they have accomplished fully healthy?
These Lakers were on fire near the end of the season. If I recall correctly, there were people who thought the Spurs, the 1 seed at the time, were purposely losing games down the stretch to avoid matching up with the Lakers, who were thought to wind up with the 8 seed at most. They preferred a matchup against the 7 seed Rockets. However the Lakers ended up getting the 7 seed and the Spurs would face them anyways lol. If I also recall correctly, wasnt Tony Parker playing injured and Ginobili just coming back from injury and playing on a minutes restriction? Had Kobe not gotten injured, it had all the ingredients for a surprise upset.