The comparison was the first generation TPUs not the second generation which is what these are. But ultimately it comes down to the cost to complete some amoun

The comparison was the first generation TPUs not the second generation which is what these are. But ultimately it comes down to the cost to complete some amount of work. Google also offers Nvidia GPUs in their cloud for training and should be able to compare the cost of using one over the other as both are supported by TF. That is the ultimate guide on how good or not good the TPUs really are.