The main difference between the Truman and the Winston are in their material and weight. Just to clear up any confusion: they both use the same blade and provide the same great shave.
The Truman handle is designed with a rubberized matte material, texturized grip pattern and weighted core for maximum grip and control. The Winston has a metal core and is coated in chrome with strategically placed rubberized grips for even more control while you shave. Both razors are designed to optimize performance and control for their given weight. As for the actual weight, the Truman's weight (without a cartridge) is 1.39 ounces and the Winston's weight (without a cartridge) is 1.32 ounces.