No, this. So far so good, as far as I'm concerned.

Try this (after you have modified the mass):
- change the attack frequency and lethality of companions to something like 75, 0.73 or 100, 0.73
- leave the pike stats intact, but change the sword stats of a phalanx in the same way as mentioned above

I think this gives an improved result. If the second row of pikes won't fight, then we can make the first row fight more frequently than the opposition. If they get past that, the phalangites will fight like regular guys. And if all my units have 75, 073 while pikes have the lethality of 1 and are able to stab much faster, you bet that I'll think twice before charging anything into the front of the unmodded phalanx pikes.