i think im a bit of a nigel in this thread because i dont seem to know someone...or know someone who knows my name but i dont know who they are...
but i thought id throw my two cents into the ring anyway.
ive just finished ext 2 and there were about 70 people who began it, about 50 who finished it, so we've seen a huge variety of students come through.
although some students arent the best at advanced, i have found that they are often more on the creative side, which favours ext one and ext two more, because the weighting is something like
1. advanced: creative = a little tiny section
2. ext 1: creative = half
3. ext 2: creative (if you do a story and not a critical response) = everything.
however, whilst saying that, ext 2 also needs the hard work, the research and the discipline that i have found in advanced more than extension one. some of the creative people who started extension two found it difficult to sustain such a long piece...but most of them got there in the end.
so i think you should point out that your creative abilities have been proven in ext one and that your passion for creative would make you a very active participant in ext two...
also, just as an aside, have you entered any writing competitions or english related things at school? doesnt really matter, but it might give you some leverage in the english staff room.
so yeah, go back to your "i know who you are" game now, i've finished blabbing.