Running the test a second time against a page with one second of output caching enabled resulted in a total of 74,157 requests and an average requests per second of 247.19. The TTFB and TTLB were both 11ms. So, compared to the non-cached page, the throughput increased by over 400% and each page took 80% less time to load, five times the performance.
Figure 2 below shows a graph of requests per second over time.
The next figure shows both tests, side-by-side.