The frequency of the games being played will increase for the Cavs and the Lakers, and towards the end of the season, the opposition will get tougher for them. Everyone is talking about the Celtics have "kept pace" with the Lakers and Cavs.... well, we've done our time already. They haven't. We'll see how they do with the drain of playing with more frequency against better competition.
We already had our stretch of weeks with 4 games per week go by. In fact, we had three weeks in a row with 4 or more games, which is abnormally tough. Anyway, that stretch of intense game frequency is the roughest patch of any season for any team; in the NBA, you're going out against big, physical guys every night, no matter what team your playing against. Therefore, the increased grind borne out of increased frequency is the biggest factor in determining difficulty of schedule.
We have a nice stretch with lots of 2 day rest periods between games coming up, while the Cavs and Lakers are gonna be ramping it up and playing more often, and then, towards the end of the season, especially for the Lakers, a bunch more on the road.
In summary: I smell blood in the water.