"@ sir toma, they only get v1 from region bonus. master level buildings like county militia don't give bonus if the unit requires this level."

Someone mentioned +1 valour for pikes at Switzerland. It is actually bonus for swiss units, not for plain pikes. Plain pikes get their region bonus at Tyrolia.

"they do have smaller frontage than spears and their deeper rank means that they fatigue faster, making them lose against spears in frontal combat."

Mmmm? I thought only armour affects fatigue? If the rank bonus applies, technically all but last reinforcement rank are involved in combat, and hence they all would tire.
Spears: 25 men per row
Pikes: 16.6 men per row. (ok, 17 men per row)

The slight difference in number of idle men shouldnt make that much of difference.

Also, spears operate in hold formation, hence no wrap around effect.