I does provide uniform care. Seattle for example can say that all their employees are trained to the same standards. They also run a decent system. No where near ideal but if I got offered a spot with I would not mind working two set days a week for how much they make.
Do I like that some systems make you start as a basic then promote to medic? Not really, I went to medic school for a reason.
Protocol wise usually larger departments need stricter protocols to cover the lowest common denominator. Smaller departments can have better over site. Is that a hard and fast rule, not by any means.
For me, I have a few dream places to work. None are a unicorn, but all will allow me to live well, provide decent patient care, and most importantly spend time with my family. I will deal with some crap as long I I get the above.