How would Tz be cheaper? I can't think of any way. Is there is some hidden cost maybe occasioned by the Kenyan eating class?
It looks like the issue (for Total) is having a pipeline near areas in which Al Kebab has been able to operate with impunity. Having bad guys blow up your pipeline every few months could make things very costly in the long run.
Which reminds me: What ever happened to the "Kenya-Somalia wall"? There was talk that "construction has already started", and the media even showed some NYS kids digging a 50-foot ditch to start the "wall". And then?