There is no potential $600,000.
It's a counter claim designed to try and scare the other party that is suing them, not a claim in itself.
On the chance they did win such a claim, it's unlikely the other party could/would even be able to pay such a large sum.
Even if you wanted to claim lawsuits, you still have to take off the large amount of lawsuits against them, some of which have in the past caused their accounts to be cleared out by court order.
Why do these truths not matter?