I agree with Prashy...having read a lot about Canada student visa through this forum, it is very much evident that no matter what your profile is, for that matter even backlogs...you can still get your visa...it just has to be your day. People get visa in 2days some more than that, not ruling out the fact that rejections do happen too.
SOP is a medium through which you can increase your chances to get a positive response, also don't forget V officers are busy people highlight your strengths now be that your credentials, IELTS score,your work or anything of that sort along with other necessary matter...make it easier for them.
I don't have a lot of experience like may others in this forum but I just felt like sharing mine.
All the very best. Ta