I stand corrected. It also appears from those charts that the bigger GCP machines have more than 10gbps connection. It looks like 2x10gbps. That would explain why instances of all sizes are able to push more network traffic.
Mind you the benchmarks are for bulk transfer with 9001 MTU. With more jittery workloads with lots of small packets, like a webserver has to deal with, then you see the benefit of SR-IOV. So AWS may still have the advantage on some workloads, and some measures (maybe latency, maybe CPU usage per packet.) However, it's clear if Google can support SR-IOV in the future they will mop the floor with AWS on networking because their network infrastructure is obviously superior.
