One of the biggest differences between a end user tech and a dealer tech is that the end user tech is there to save the employer money. The dealer tech is there to make the company money. That is a huge difference.
Another big difference is if it takes an end user tech 24 hours to install a ring gear nobody in the company would know if that's too much time or not. In most cases we know exactly how long every job should take. So the end user's company has nothing to measure the tech by except for downtime.