Well, I saw that subbed version of the the live Gundam SEED Music as well. Tamaki is still too inexperienced for live, and yes that was a poor performance. I think thats because she sand the remixed version of the song. You can see the tempo is dead slow, and also Tamaki always sing fast tempo songs, and never did a very good job in slow ones.
Well, talking about PRIDE and Life Goes On, a lot of people say its still second comepared to Ignited. And truly, TMR is still a better compared to all of them, and we can see that from the live performance. ^^ Also, TMR does the v-o for the Heine Westerfluss^^His voice is so cool^^. Unfortunately, he was "killed" maybe, cuz this Heien character was just there to give TMR a "present" for doing the 1st attack of the GSD.
I see that you hear a lot of GSD, but how about GS? Many say that atm, GS's music is better than GSD. I especailly like Akatsuki no Kuruma from the special ending. I think its really cool, especially the sunset theme set by the singer. Also, Tanaka Rie sang two more image songs. Both were very good ^^.
As for the ratings, Tamaki Nami's were on Oricon, and most were above No. 5. The best was Reason, No. 2, which was just a bit lower than TRM's Ignited No.1. But the remixes of Tamaki Nami's songs were only on No.9, which was a lower rating compared to most of the GS songs.