A quick summary of what eurocockpit is claiming, for non-French readers:
The last reported position of AF447, at 0210Z, is actually about 3nm west of track, so it is likely that AF447
was in fact deviating to avoid weather. Given GPS etc, this discrepancy is unlikely to be due to poor navigation; nor is it an offset, as that would have placed AF447 1 nm EAST of track.
Thus they place in doubt BEA's finding that AF447
was on track, and AF CEO Gourgeon's suggestions that perhaps the crew of AF447 didn't use their wx radar appropriately.
(Before someone asks, I grew up in France and the French-speaking part of Switzerland, and I'm a pilot (albeit only PPL) and so understand aeronautical French as well as normal French)