I never said it did, I was just explaining why one pays more than the other.
No. Wendy’s is what you would call a starter job. This is the type of job where they hire people with no work experience, they get skills (working a cash register, cooking, stocking shelves, etc) usually at very low pay, then they take those skills somewhere else that pays more money. Union Grocery stores will not hire you to stock their shelves, or run their cash registers without prior experience, but if you have experience of doing that stuff at Wendy’s, they will hire you for a better wage than Wendy’s pays.
The same for GM; if you don’t know the difference between a torque wrench vs a pneumatic impact wrench, General Motors will not hire you; you will have to go to a starter job, get some skills, then take those skills to General Motors for more pay.