it's a sobering thought

I've been reading some posts on the SDL forum comparing SDL with EQX and two points interested me more than others, and that is the fact that "our" railway at Mayoka can only carry a fraction of the IO that both EQX and African Iron hope to be transporting in the near future and it is also believed by some that the Pointe Noire port may not be big enough for our needs.Come on, all you more knowledgeable people, can you help get this in perspective again? or do I have to look for another lot of "what ifs"?