tbh i dont think any of the universities have a clue how they should be making offers regarding access course applicants.
These are 2 of my offers so far
Queen Mary - Conditional - Obtain 75 credits at level 3
Goldsmiths University - Conditional - Obtain merit in all maths modules
So clearly there is no solid rule in place as to only 60 credits allowed or not giving offers that include merits and distinctions.
I believe we are the "guinea pig" year and will be used as an experiment to solidify the rules for the next year