This is the same problem as with all benchmarking, what are you measuring and what is really, really, important for you. The fastest webserver would be one that whatever you send just returns some static lines, it will be really fast and beat anything, but in most cases totally useless. So the question is in what are you interested? Is it raw throughput? Or maybe massive concurrency? Or maybe low latency? Or maybe very versatile system? Or maybe high-reliability? Or maybe …?
Unfortunately, building a system usually entails making trade-offs. TANSTAAFL.
Another important issue is how you actually measure these things. Is your way of measuring interesting and relevant for what you want/need? Do you know what you need?
I will stop here but benchmarking is a fascinating field. 
