Is it normal that the performance of facebook website is low when testing it with Audits?

I'm trying to test my react application using the Audits tool of google chrome. I took a look of the performance of another sites to discover the performance. I tried facebook website; I check Desktop device, and all the checkbox audits then I choose Simulated fast 3G, 4x CPU Slowdown and I check the clear Storage. I run the test in a private navigator then I got this result:

I tried the test many times and every time is under 50%. Is it normal that the performance of a great website under 50% or these values are relatives?