Honestly, at the point we are pushing him, his death is almost guaranteed. He can delay things or possibly get lucky with torpedoes, but that's about it. He MIGHT have been able to torpedo charge me through the smoke. My AP shells are not able to get module incaps on his torpedo tubes, so it's possible he survives to wipe me out at close range. That probably would have been his best bet; try and use the smoke to lure me in close and hope my hydro is offline. But it's a slim chance.
Double down-tier cruiser is usually not an enjoyable experience at T6 and T7. Very few cruiser lines are comfortable in those situations. I can think of a handful of T6/T7 ships that I am comfortable playing when bottom-tier like that.