ORIGINAL: DarZeelon
If a two-stroke and a four-stroke are timed to produce their torque at the same RPM, the two-stroke will be capable of spinning a significantly larger prop.
Not so Dar, the torque figures are an average over a complete power cycle. Maximum negative torque occurs at about 20 degrees before the end of the compression stroke and maximum positive torque at about 20 degrees after TDC on the power stroke.