You'd be surprised. Typically, you'll find that jetliners are older and therefore have an older tech stack, but also that they're redundant. Multiple pitot tubes, for example. On newer GA planes, there may be less redundant sensors, but the technology running them can be more modern and more powerful. The tools on the jet get the job done with two pilots and are there to make money, while the GA airplane is going to be piloted single pilot, and more likely for pleasure.