Doesn't really give any additional information from ABHs post there. Certainly sensible but to say that there is a "correct" way to lock a bike is like saying that there is a "correct" colour for a bike.
You haven't actually tried this have you? 
In the real world cutting a wheel (especially with a tire) doesn't work as easily as you seem to think.
Odd you should mention that but it's not one of the things that I've done personally. But the London Tonight presenter certainly made it look easy (40ish seconds). Possibly something to do with the scissoring action as opposed to the hacksaw action reference by the venerable Sheldon Brown. She claims she didn't have any training but no doubt she was lying to fulfill some kind of secret evil agenda to make ABH look stupid.
Depends on the lock in question. I can get through most cable locks with minimal effort using manual tools. Cables are great as a secondary lock, but as a primary they're SORELY lacking
You should let sold secure know about this. It seems they have erroneously rated a cable lock as more effective than a papier mache guard dog.