Yes, but the mg wasn't fixed to the vehicle.
And it was a highly successful TD. Heavy firepower, good visibility and gun traverse, good mobility. It was fantastic out on the Russian steeps.
So no, you couldn't slug things out with a Tiger. Or even an M8. But who cares when you don't have to? Much better to finish things with a single round from hiding than to trade fire.
And two of those you listed are a ways below the Nashorn on any list you could make. You don't want it, but its not like it's undeserving.