Are people actually debating this? A series III 200t vs series II 250, there is no comparison.
The 200t has quite a bit more power, a lot more torque which is available from much lower revs, has a much faster gear changing transmission and has more ratios too which keep the engine within maximum power for longer and with lower first gear for better initial acceleration. The vehicles weight about the same, the 200t very slightly heavier.
Once you get to bends then it gets even worse for the 250. The series III chassis and suspension set up massively out-handles the series II.