This really isn't a very good benchmark. It's basically only validating the Cloudflare edge network, but the test itself is far from real-world. A service that returns the current time is not doing anything practical and borders on meaningless.
We have a post which compares CPU intensive workloads which should be ready after the American holiday. The summary is a 128MB lambda provides you with roughly 1/8 of a CPU core, which is therefore 8x slower than a worker.
