Shinto, once a guitarist gets the hang of hammer ons and pull offs Thunderstruck isn't terribly hard... it's just a little fast. However, it is the ultimate song for impressing nubs. Nubs like tokill.ace. And while Angus Young is a solid lead guitarist, he should not be considered among the legendary guitarists. He was not absurdly incredible, and he did nothing to pioneer the industry himself. The ACDC vision was all Dave Evan's handy work (lead singer).
I reiterate, Thunderstruck impresses nubs. It is a tight song though.