Mass Combat Pikemen problem

[Pomphis]

Pikemen are: TS 4, (Cv), WT 1, Foot, 60K, 12K.
Heavy Infantry is: TS 4, WT 1, Foot, 40K, 8K.
Adding Neutralize Cav (for example by giving them halberds) to HI increases costs by 25%. This results in TS 4, (Cv), WT 1, Foot, 50K, 10K. Which is similar to Pikemen, just cheaper.