Going from equipped powerlifting to Strongman

If you were a strong equipped powerlifter, would you still have the strength base needed for Strongman as you would if you were a raw lifter?

Let’s say you had huge numbers as an equipped lifted (perhaps even a 1000 pound bench), but you did very little raw training (let’s assume you never went heavier than 405 on bench in this example).

I hope this question makes some sense, I will clear up and clarify on anything as needed