At that point it is apples to oranges. One of the main reasons why etcd writes are slow is because they are guaranteed to be durably persisted across the quorum

At that point it is apples to oranges. One of the main reasons why etcd writes are slow is because they are guaranteed to be durably persisted across the quorum. If you just turned off file system syncs in etcd you could probably get an order of magnitude better performance as well.