Well , they will not decide the cut-off first and then filter the applicants .
They will first look for the max and min scores from the pool and take the average of that and may be they will freeze the cut off slightly above the average . If they really want to cut-off the score at 450 i think there will be only bunch of people that will be boarding their flights to canada as far as my knowledge and according to me 450 + is really an excellent score and it is highly likely that they will get an invitation for sure . Anyhow , lets hope for the best and wait .
Fingers crossed .
My Analysis will apply for the Applicants without Canadian experience / PNP / Job offers . Rest of my fellow future canadian country men hope for the best
. There will definitely be invitation to people as low as 380 with their scores . Not instantly but may be slowly over the period of months .