Hink, I missed the part of your question which asked how does it differ.
The Perfect Retrieve encourages you to first develop the natural retrieve of your pup. One section of the DVDs is devoted to that. As you learned in the Perfect Here, you also need a well trained recall command, which is key in clean retrieving work, especially when birds come into play.
Then it teaches the pup to Hold, then to open its mouth to "Fetch", then teaching the dog to reach for the object, then teaching it to move for the object, then teaching it to pick it up off the table, then the ground.
Then it overlays the ecollar on the already trained "Fetch" command. Teaches the dog it controls and turns off the stimulation via swift compliance to the already trained command.
It does not use an ear pinch.
It stops there. It does not include any of the downstream retriever training methods of Force to Pile, or handling work.
The objective of the Perfect Retrieve is to train a dog to retrieve on command and deliver to hand, including birds, with good mouth manners.
I have used other methods to advance my dogs past that level of work e.g. Force to Pile, teaching blinds, teaching handling, longer marks, some degree of lines and water force.
I used an ear pinch with the GWPs I trained prior to my last two which I did not use an ear pinch on. I would say I saw no difference in the end product between those various dogs.
I took this video a year ago. Had not worked that dog on FTP for a long time when I took that. Just wanted to see how it would go. He is happy and doing the work, which works for me. He is highly reliable to recover downed birds while hunting, land or water, all types of birds and waterfowl. He was trained with the Perfect Retrieve method using no ear pinch.
https://www.youtube.com/watch?v=OFB4Im-SsiASame dog retrieving a big boar coon (as in over 20lbs) that he treed and I shot out to him while hunting squirrels. He was wooling the coon when it hit the ground, I told him to fetch it up and he did, ...

The Wife threw out a pigeon egg from the coop yesterday into the tall cover CRP. Just moments ago my youngest dog Tess was somewhere in the CRP while the older dog and I were on the front porch. I toned her to come to me and she did. She had the unbroken pigeon egg in her mouth. Dropped it in my hand when I asked for it. The older dog has done the same thing. Speaks to good mouth manners.
