LPL is not a great resource on this since people aren’t going to be discretely picking locks to not show signs of tampering. They are going to pull out a bigass pair of bolt cutters (and if you cut the pocket out of a pair of jeans you can fit some REALLY chonky bolt cutters in your “pocket”) and cut through the cable.
In terms of protecting your bike from an actual attack? That is going to very much depend on where you live. Growing up, basically every thug had some good bolt cutters so chains and even cables were worthless and you needed the big fucking bar locks. I was visiting my sister on a business trip a few months back and saw someone literally pull out a battery powered angle grinder (ryobi) and slice through a bar like it was butter while I gassed up at a Wawa’s.
Which is why all you can really do is lock your bike on crowded well traveled bike racks and hope that someone brought the road bike out.