it's jade's voice. it needs more strength and she struggled to hit the easy notes on SLY. people went mad because of the song choice and the adele mania, NOT her vocal performance. image too. nice pretty girl, but her attire wasn't flattering at all, it didnt complement her; compare it to what adele wears, she always looks nice. back to the vocals, think about what she'd be like in the theme weeks with the vocals she'd displayed, could her voice cope? you've got to be flexible and her image would work against her.
alexandra in 2005 and 2008 was completely different vocally, emotionally and physically. her voice had matured, she knew how to be more soulful with her voice (2005 was a rushed vocal of saving all my love for you and 2008 was far more emotive and soulful).alexandra clearly had changed and her journey added to the tv bonus.