The guide covers the criteria for the numbers to work. If things haven't been retested lately the criteria could be different now in some cases
Ok, I made the test, and this is what I've found: Hansels continue being open to steals even being pinned for troops, unless spies are below 15%ish. It was a quick test, but I'll be making further tests to make a better clarification of this doubt.
Greatness - it technically does make a difference whether you're pinned by someone else. A large enough account may be able to pin your troops deep enough to keep you DTW to steals for 2 regens, since they may be able to take your troops down below ~15%. But most of the time, outside pinning will only take you just below 20%, which means you'll be open for two regens before you can be ass pinned again. If you pin yourself, you may be able to keep yourself in that sweet spot where you're DTW to ass but open to steal. *Edit: read an earlier quote wrong. Removed quote and my response to it*
From Belle's fight mechanics guide. Looks like she did update it to cover the new open for steal below 20% mechanics. In my defense for saying it wasn't there earlier, she had this at the very bottom of her guide.