Ken,
Tucano VNE is 300kts IAS, max LL was about 270Kts (a few knots more if you turned the aircon off...). 300kts is about 345 mph, pretty well between the max speed of the Hurricane and early Spitfire. IIRC 1151 EShp (Garrett TP351) and approx 2000Kg plays 1175 hp (Merlin XII) and 2800 Kg fully loaded. Looks pretty comparable to me - and great fun as a 23 year old to be let loose in one.....