From a Dance Choreography point of view, the Pour Laurette performance is more consistent.
Alizée - J'en ai marre ! (2003-02-09 Recorded - 2003-03-08 Aired - Tubes d'un jour, tubes de toujours TF1)
http://alizeeamerica.com/forums/showthread.php?t=8680
Alizée - J'en ai marre ! (2003-03-03 Live - Pour Laurette France 3)
http://alizeeamerica.com/forums/showthread.php?t=8677
Compare:
0:07 cross three times
1:29
[arm movement]
1:32 right - left - right - arms crossed - left
2:33 right - left -
[left] - arms crossed -
[right]
3:03 turn in eight times side-side-close
3:18 wave three times
3:29 shake down two times
3:35 right - left -
[left] - arms crossed -
[right]
0:21 cross three times
1:42 no arm movement
1:45 right - left - right - arms crossed - left
2:47 right - left - right - arms crossed - left
3:18 turn in eight times side-side-close
3:32 wave three times
3:44 shake down two times
3:48 right - left - right - arms crossed - left