I'd argue that Google Search is much more sophisticated than Stuxnet. Windows is much more sophisticated. Linux is more sophisticated than Stuxnet. The list goes on. We tend to ignore the sophistication of things we are familiar with, and hype those that surprise. But that's not a fair measure of anything.
In my view, the sophistication is implied by the breadth of expertise required to put the whole thing together. Google Search and the OS landscape are for sure broad and sophisticated. However, their development was accomplished by computer scientists. In order for stuxnet to be effective, it was necessary to employ expertise in: - Uranium enrichment methods and processes - Capital equipment control systems and their…
You don't need to know classical mechanics to use a bike, or know about internal combustion engines to use a car.