Very true, Rythmic.
I´ve just recently started a new campaign on Large (100 men in infantry, 166 in spears/pikes, 66 in cavalry, that´s Large, right?) after playing on the level one below that for all time before, and the size does matter - the larger units are much more cumbersome to handle and, especially when drawn out into two ranks, tend to stumble into the enemy with their flanks long before I´m halfway ready. So reducing the unit size can actually help a lot to get the hang on the game.
And I believe MTW is way less forgiving to wrong decisions on the field than RTW and M2TW are. One single wrong move can decide a battle, a single unit routed can lead to an unstoppable avalance.
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