Similar to what I planned to say. Pikes could have a "formal system" for use, like a military drill manual, and pretty simple in comparison to that of a sword. The days of flintlock, matchlock, even cap lock (right before the modern cartridge era) of the US Civil War made for a pretty unwieldy pike, stick a pointy end on it and it was at least something if the ranks broke or you had no time to reload before being overrun.