Here is a few reasons why it might take 2 seconds in a video but 2 minutes for you or me. First, raking actually takes some practice to get good at. Yep, it is not as complicated as picking but it does have its own 'feel' you need to learn. Also usually practicing on the same lock over and over lets you get faster and faster in opening it. In addition, every lock is different even if it is the exact same make & model. All sorts of things cause, this including has it been heavily used, left outside, did the machine make this one 'sloppy' or near perfect, etc. And of course the one thing that WILL be different is the key.
Generally if you want an easy to rake lock run down to your local megamart and look for a cheap brass padlock but make sure you slosh the package around a bit to get a look at the keys included. How much variation is there in the key cuts (the valleys on the keys)? A lock/key which does have much height difference between each cut is generally easier to rake.
Finally, different rakes work better on different locks/key cuts. If you have several you can try each a few times and see which one works the best on a particular lock. Also remember, if you are going to make a lock raking video would you film the one you struggle with each time or an easy 'confidence' lock? Enough said.
