The problem with any team that has Alonso in it is they end up having to micro manage him, instead of getting on with managing the car and the rest of the team. it deflects their priorities all the time, look what happened at McLaren with him.
I feel that JB has given a master class lesson to Alonso in driving and how to get the team upon JB's side and once again he is winning the pyschological battle at the team, just as he seems to have done in the past. All that Alonso is doing is stirring up bad feeling towards himself.
This year, despite the car, luck and reliability Button has been the better driver of the two, he's happier, seems to have the team around him more and is probably liked more in the team I'd imagine too. He doesn't seem to let these so called "best drivers in the paddock" get to him and actually relishes the challenge of driving against them. Alonso has not done anything to demonstrate why he is on more than double the salary of Button for instance, Jenson beat him in Qualifying and Race stats this year... although tbf you can only take that with a pinch of salt, but there have been times where the cars have both finished the race, where they have both been fine in qualifying and Button has a lot of the time had the upperhand.
It'll be interesting to see how they compare next year - in what will hopefully be a lot quicker car and a lot more reliable, that's where the real test will come.