Yep, that's the Hellcat, a Jug that can turn. It's also a Jug that can accelerate pretty well.
In the early stages of a dive, the Hellcat is one of the fastest in the game. With a bit of a head start, It'll catch F4U's, P47s, etc. trying to dive away. The hellcat's better accelleration helps in the early bit of the dive, and you can catch many "faster" planes when they don't expect you can. Anything that tries to dive away from a Hellcat is going to die unless it has better high-speed control, a higher top speed, and a decent E advantage at the start of the maneuver. That's a lot of ifs in there... mostly guys just die trying to run from my Hellcat. Give me a bit of E advantage and I'll run down a Pony or a D9.. sure they'll get away eventually, but most times I'll fill them with .50 cal first.
Now the Hellcat can turn, but it has a NASTY accellerated stall. You must do two things to succeed in the Hellcat. 1. Have an energy advantage. 2. Don't push it hard when slow. Your best bet is to keep it fairly fast... 250-300 or so. The Hellcat can turn, but it needs an E advantage to do it. If you don't have the E to really crank it without getting to slow, you are going to be in trouble. Keep your speed up... fly it like a Jug. When you need to make the kill, only then use it's turning ability.
Oh, it also climbs a heck of a lot better than the Jug does. The Hellcat is my point defense fighter and Navy plane while the Jug is my bird of choice for a longer range sweeps, escorts, patrols, and that sort of thing.
