The first part, that favorites can only be grouped in 4 lists for each TV, is easy to grasp.
The second part, the 100-10 and 50-50-50-50 X2 examples, gets more puzzling the more one thinks about it.
The 100-10 would seem an attempt to explain that the number of favorites in any list can big or small.
The 50-50 etc. example, is, well, I'm not sure what the point is... I can think of at least 3 different possibilities.
Whatever the case, I would think if there is an absolute limit, either per list, per TV, or total, at that point the circuitry would not accept another checkmark, and some dialog box will open warning the limit is reached and no additional entries will be accepted.
Or, is that too much to ask from these boxes?