- 20AWG and not that expensive. Good find!
- 0.46A is nothing special
- Nokia cables are hit and miss if you don't know how old they are. Keep in mind they're coming from the times when Nokia phones wouldn't charge over USB but only over the round connector (that was quite a PITA but actually has a surprisingly nice and useful range of accepted voltages, look up the pdf "Nokia 2-mm DC Charging Interface Specification v1.2", this could solve easily the trouble we're having nowadays with USB). And they kept the same indicative for the cable so you don't know precisely how good it is. I have the smaller one but while it seemed a good idea at first it is a huge pain and almost impossible to use. If you have a very simple setup like a laptop on a table and the phone near it then it's fine but otherwise you just can't use it, it doesn't bend easily if you want to use a powerbank "back-to-back" with the phone, you can't find a place for the phone if you want to charge from mains, etc
- don't throw out the "no-name" cables. At a minimum cut them and see what's inside :-). You can also reuse both ends for various projects that don't need that much current (or no current at all if you want only data). Or just keep them as backups in the office, in the glove box, on your shelf to hand out to people you know won't return them, etc - most work even if slowly. Also many devices aren't so sensitive to voltage drops so you can delegate the "no-name" cables to that job if they work well.