I love the discussion about the trilogy.
I found some live performances of ayu uploaded by different users that have also passed the 1 million mark :
Itsuka no Merry Christmas Live 1999 - 2,928,848
https://www.youtube.com/watch?v=Bm8fkioPlLg
Love song from Best artist 2010 - 1,883,080
https://www.youtube.com/watch?v=gsFOzEG-Huc
A Song for xx 2001 Live - 1,825,040
https://www.youtube.com/watch?v=st8eRKaqchU
beloved live from Power of Music - 1,801,057
https://www.youtube.com/watch?v=4fFXzBHd7pw
Boys & Girls 31/12/1999 - 1,301,018
https://www.youtube.com/watch?v=2owCz5wgGQw
SURREAL from DOME Tour 2001 - 1,274,881
https://www.youtube.com/watch?v=Gc6Jncc7sFc
Dearest (ive from Asia Tour 2008) - 1,257,511
https://www.youtube.com/watch?v=rnRO8PyH2RU
Dearest (Live from ?) - 1,216,185
https://www.youtube.com/watch?v=McJRDV5WWjg
July 1st & Hanabi Live 2002 - 1,192,965
https://www.youtube.com/watch?v=Bm8fkioPlLg
Depend On You from Super Live 98 - 1,136,142
https://www.youtube.com/watch?v=_DwVzKhX3_w
and many many others very close of 1 million views