It Seems to me that it does not matter whether you have 4 crews per plane or 6 crews. What matters is utilisation. How many sectors a day are AL's planes flying and how many of their crews are they using? Are AL's pilots flying 4 to 6 sector days like some of the competition or just 2. AL's problems may well be that their aircraft are in the air too little and their pilots on the ground too much. This has nothing to do with minimum rest, just how productive are the flight crew compared to say BA, bmi or the low cost sector.
I am not trying to be contentious here but business is business and everyone wants to see their assets working for them rather than not being used at all or at least in an inefficient manner.