Smartphones yes (though many smartphone users don't have much choice as to browser, or at least rendering engine), but netbooks are an arguable case.

I was referring more to people making their desktop browser choices based on benchmarks which have minimal, if any, effect on their day-to-day browsing. It seems like after every new browser release we get bombarded with "X desktop browser runs the SunSpider test faster than Y!" headlines, as if it's something that actually impacts people's browser choices.