The problem in that is one of method of instruction. (I am trained in driving instruction) Some people are keenly focused and wil only need telling something once, others will need to repeat an exercise 4 or 5 times until they get it. For instance, a 17 year old apprentice mechanic will need less training on clutch control than an 80 year old granny. Then there comes the issue of how to teach. Some people respond well to a guiding hand, others to a big stick. (I fall into the big stick category, something to do with how they taught me at school) It would be very easy for an instructor to get it wrong, if he has been using the stick all day it is easy to carry on using it when the kid gloves should be out.
All that said there are a couple of differences where flying training is concerned, first is the fact that it is properly expensive and that fact should never be forgottten by an instructor, it is your cash and you can spend it where you like. The other is that 90% of students are driven to get the ppl (there are the odd kids with pushy parents of course) and therefore shouldn't need the stick really. It is a judgement call from the instructor, if you feel that he has made a bad judgement then tell the CFI!