Just like AZSUnshine said, you will be competing against the other candidates in the nursing pool for that round of submissions. So, for example, your application could be top of the pile in one group, middle in another, and n yet another you might not get a place. In other words - always assume you'll be up against really strong competition and make your application the best it can be.
I can't give you specifics on the point system, because nobody knows the exact way it's done, but the best I've managed to find out is as follows. DO NOT QUOTE ME on any of this, this is just what I have managed to gather from asking around! that they will give you points based on your HESI score, your GPA. You can earn an additional point if you have a previous AA degree, and an additional 2 points for a Bachelors degree. You can also earn an additional point if all your University co-reqs classes are completed (some Unis allow you to apply even if you have a class in progress. If you have that class or classes completed, you can get an bonus point).
Regarding your HESI score. They will take the overall score, I believe, and allocate you points based off where that score falls. For example, if your score falls between 95.1-100% you get 5 points, if it falls between 90.1-95% you get 4 points, and so on. So, as you can see, even those extra 1/10th% make a difference. You really want to aim for a HESI in the 90%, and preferably high 90s.
For the GPA, from my understanding they take your GPA and multiply by 2.5. So - the maximum score you can get is 10 if your GPA is a 4.0. Again, based on this, every single extra bit of GPA you can get helps you.
They add all these scores up and rank applicants in order based on college choice. Every college uses the same formula, I think, so Glendale evening is the same as Mesa day, for example. It is more a case of who else you're up against in your application period. Glendale is one of the more popular choices, so that possibly could impact things for you. When you apply you get a choice of 3 colleges to apply for. Even if you don't particularly want another school, put them down anyway because you might get a place somewhere else, and rather that than no place at all.
My understanding about the University is that as long as you meet their minimum requirements as per the CEP application process, you are guaranteed a place at the University of your choice IF YOU GET A PLACE AT THE COMMUNITY COLLEGE. In other words, it is the community college that makes the final decision. If you don't get a place at the CC, then you don't get a place at the Uni. If you do get offered a place at the CC, then you'll get your Uni place.
This last round there were over 1000 applicants, so it is very competitive. My best advice is that you get stellar HESI scores (high 90-100) and great GPA. If you already have a degree, all the better. If you have all the Uni pre-and co- reqs done, even better.