The article is a good summary. As a big fan of both bands, I have been disappointed by both bands' outputs since mid 90's (These Days & Slang) and never thought they matched their earlier outputs, but I agree that Bon Jovi made the right business and marketing decisions to maintain their success level, and Def Leppard did not (some are due to reasons beyond their control).

When I buy a Bon Jovi/Def Leppard album these days, I expect some good songs and some god awful fillers. But Def Leppard pisses me off when it comes to the setlist. After X tour, they just gave up and played short greatest hits set. They can still do it (see Japan's recent setlists) but the fact that they don't want to do the same in other parts of the world