I think what he means is that not all servers are created equal, so counting "servers" is a useless metric. An EC2 32xlarge instance with 128 VCPUs is going to

I think what he means is that not all servers are created equal, so counting "servers" is a useless metric. An EC2 32xlarge instance with 128 VCPUs is going to handle far more traffic than a large number of smaller servers.