Naughty Saks are misleading you.
I did VRQ level 2&3 at college then Sassoon Academy, plus other short courses. Even with Saks, after level 2 realistically, you won't be ready for salon work as level 2 is very basic. You need to do level 3 afterwards if only to get to grips with colouring. It's practical experience that's essential once you have understood the foundations. A bit like learning to drive. You need hours of driving on your own before you start to feel really confident.
For VRQ, you have to pass your practical assessments on real people including doing a good consultation. I think you can pass the Perm unit on dolls heads if you can't get a model but that will be a last resort option.
The only difference between the two is that for NVQ at college, you must have a salon placement but most colleges offering VRQ use their own college salon for the practical training. I went in and spent extra hours in the college salon at the discretion of my lovely level 3 tutor. Definitely check out all the colleges within traveling distance and visit them if possible. You've probably left it too late for this year but try and nab a student at the coffee break and ask them what they think of the course. They may all offer VRQ women's hairdressing, but they will all have their own way of teaching.
To be honest, I think the biggest difference between any training course is mostly down to the tutors and that can vary hugely! I briefly went to a hairdressing academy with a sneery tutor who wasn't keen on teaching anyone above 25 so, I voted with my feet and left.