This ad is a little misleading in that Winstone scores were not the best measure of CPU performance. It is true that for a brief time Cyrix processors were faster and cheaper than Intel processors for the most common tasks. This was especially true of 16-bit code which was still the most common and tasks that benefited from faster integer performance.
However, Intel Pentium chips were still faster for 32-bit code which was becoming more common and for tasks that benefit from faster floating point performance. In addition, the pace of Intel’s development was more than Cyrix could keep up with and after a couple of years Cyrix became irrelevant.