The animation of the tracks of all relevant aircraft is interesting - one can see AF459's deviation while AF447 neither communicated nor deviated, (as you say), yet they must have seen the same radar returns as AF459.
That is interesting. How was the track for AF447 obtained? Im assuming the tracks from other aircraft were also from the same source. We can also see AF459 going around what must have been phantom returns on their radar. What this animation tells me is that none of the flights there had the complete picture of whats ahead. It could very easily have been any one of them in the position AF447 ended up in. (that is to say in the middle of what looks like a very active cell.) It seems to me we are tempted to question the track of AF447 simply because they were unlucky enough to not make it to the other side...