If I can add to Claidemore's posting these test results were supported by the combat reports I posted on Posting 96.
However to deal with the Fw 190 being outturned the following examples were in the link I did give you.
PO J Stewart 30th July 1942
I stall turned to attack the rear two Fw190, They broke and turned with me but I could easily out turn them and got several bursts at the rear one.
S/Ldr Watkins 19th August 1942
A FW 190 dived down to my height and swept around behind me, I easily turned inside the enemy aircraft and fired a short burst at 45 degree deflection
Flt Lt Manak 5th September 1942
One of them got onto my tail I avoided him by a left hand climbing turn
S/Ldr T Gaze 11th October 1942
Whilst the left one turned, I easily out turned him and fired a long burst.
So we have the test reports being supported by pilots combat reports that the Spitfire can easily turn inside a Fw190.
Against this we have a report from a Hurricane Pilot. Now lets think about his for a moment.
a) Did this pilot ever fly a Spitfire in combat? I don't know but the probability is that he didn't. Most Hurricane Squadrons were either posted overseas or converted to Typhoons. His comment makes sense if he was flying Typhoons against Fw 190, as there was little in it so the tactical situation and skill of the pilots involved would have a major influence on the result.
b) If he was only a Hurricane Pilot did he fly combat against Fw 190? Possibly as a Hurrie Bomber which adds another factor to the debate. The RAF knew that the Spit V was clearly outclassed by the Fw 190 and would not knowingly send Hurricane fighters against the Fw 190, as their chances of success were very slim, at best.