No it doesn't sound strange - firstly as has been posted, do the attacking yourself. Certainly your opponent gets to choose hte order of combat in his bound - nothing your can do about that, only do the best you can when YOU have the choice.
My math already mentioned that the -1 for het 4th rank of pike only counts in the pike bound - just like the QK of the pike by the Wb or Bd only counts in their bound.
It's also not compulsory to fight only 4 deep - 6 deep is possibly better - it doesn't matter how much it costs per frontage as long as you're killing enough troops - 5 deep Wb will break long before 5 deep pike, and pike did sometimes fight deeper - it's not set in stone.
Pike are not actually supposed to be killer troops - they are supposed to push and grind and wear the other guy down, which they will usually do as long as you're patient enough in DBMM....much more so than they used to do when they died in 4's and blade were factor 5........
Then there's the rest of your army - pike usually come with a regular army so you should be working hard to get good matchups - eg Kn vs Wb are fun.
If it's not a regular army then you're probably running Pk(I), in which case I suspect conventional wisdom will be the run them a minimum of 6 deep, 'cos you are going to lose bucket loads so get ready for it, and that's why they'er only 3 AP's per element and 1/2 ME!
Lastly it is always incorrect to match single troop types against each other and compare them solely on that basis - pike are much more cost effective vs all mounted troops than Bd for example (at worst they have the same factor and are killed by the same things, and often they are much better), and that is another factor that must be considered when setting an overall AP cost.
The points may not be "correct" - but a comparison of Pk vs Bd and Wb is not nearly enough to support any change.