I know that Advanced Com Systems refers ONLY on abilities printed on the Deployment Card e.g. Bombardment

but why shouldn't it also work with Optimal Bombardment Command Card???? its essentialy the same type of ability

" essentialy the same typ e" does not necessarily mean "same ability". Sorin's own "Bombardment" and "Optimal Bombardment" command card are 2 different special actions

"Because it says so", and that's because not being specific enough would unnecessarily limit the design space.