Ahmed Hussain answered a question regarding nominations few days ago:
He said although provinces have a right to look at Experience, Language Skills, CRS scores and NOC codes but they can't see the Name of Candidate, Nationality, and some other personal information. This is required by Immigration law (something called blind____) to avoid biasness and moral corruption.
Then someone from Ontario clarified thing related to new profiles.
They argued that Ontario have access to all active profiles regardless of date it was created. However, we requires applicants to create new profiles so that we can reduce the sample size to few thousands instead of whole sample. In second phase they select applicants above 400 and finally with NOC they need. So at the end they review couple of hundred profiles and then issue NOI. They do look at Experience, Qualifications, and Language Skills before inviting unlike ITA which is more fair to all.
I hope this will help you understand why some applicants receive NOI while others don't.
Reference: I can't recall the exact date but I saw it in Canadian Media. It was just a couple of days back.