I don't know the numbers but it's because you have to renounce a player's bird rights to get rid of his cap hold, i.e. being able to sign LeBron, hence you cannot go over the cap to re-sign Capela
The regular season would still be more taxing in the West than in the East if he were to care for a decent seed. Dude took like all of January off and had a completely dysfunctional team and the east was too shit to overtake them.
Still if I had to bet I'd say he moves West. He's not staying...