About "How to generate product keys after an order"Answered

As I read from Help, at Step 5 there 2 options.
Focusing on Step 5 option 2, one way (Way 1)  is to call  the web api limelm.pkey.generate;
The other way (Way 2)  is the creation of “bulk product keys, export them from LimeLM, and then import them into your payment service”.
My question is : 
Are Step 5  Option 2   Way 1 and Way 2 (limelm.pkey.generate and bulk creation of keys..) exactly the same thing ? Do I achieve same results?
or Does limelm.pkey.generate implement a more performant license? I see  a lot of arguments  limelm.pkey.generate  need of.
Waiting for your reply

, edited
Answer

Are Step 5  Option 2   Way 1 and Way 2 (limelm.pkey.generate and bulk creation of keys..) exactly the same thing ? Do I achieve same results?

Yes, they're exactly the same thing, and call the same API. The difference is one is pre-written and one you write yourself.

Also, importing keys into your payment provider is for older-style (mostly out of business now) payment providers that didn't have hooks or APIs. Most of them are gone these days, replaced by their superior competitors.