That's only if you use Volta's Tensor cores however.
AMD's 16-bit packed performance with Vega is more than respectable vs NVidia's 16-bit packed performance in Pascal.
In the future, all AMD needs to catch up to Volta's Tensor cores is to build Tensor cores themselves. That doesn't seem like a major technical hurdle. I'm fairly certain that Google would be the primary patent holder on Tensor-cores.
