I dunno, there's a pretty plausible scenario for a world wide nuclear war...
Iran nukes Israel as soon as it gets a nuke (as a recent Iranian leader pretty much flat out said they will), Israel then retalliates by taking out the rest of the Middle East and the muslim world, which then causes Pakistan and India to lob them at each other, at which point North Korea will join in, thinking it's a US plot, and then in return, the US nukes North Korea, which then pisses off China, which nukes the US and Europe, which in return nukes China.
The US plan for defeating a massive soviet invasion of western europe mostly called for using tactical, or battlefield nukes against armored columns and such. After all, they don't want to leave the places they are defending uninhabitable. .
Plus, that would be pretty unlikely in the first place, as the Soviets long ago gave up the notion of invading Europe (I think since Krushev sp?), and there was a great deal of effort in making clear and immediate lines of communication between the US and USSR (the so called Red Phone or hotline between the two countries' leaders).
While there's not the two superpowers there used to be, a lot more countries have nukes todays, and the motivations are now completely different. It used to be just power, which both sides understood. Now it's more either religion, hatred, or just plain insanity...(though apparently, JFK was pretty nuts)
Anyway, back to the original subject, that Monte Cook is 'powerful', it shouldn't be that surprising. Look at how revered Gary Gygax is by many people. (Hey, he even made it on Futurama). Plus, WOTC has made something of an effort to sell it's authors/designers, or at least, tells more about them than most companies do. So, even a fairly lukewarm review can be influential...