The problem is, you state that as fact, but it's only your opinion. A lot of factors go into determining how efficient a transportation system is. Would gondolas be more efficient in NYC as opposed the the subway system, etc.? It's a hypothetical comparison that until you see how the system operates in realtime conditions you can not make an honest comparison. (Perfect example is when the system is shutdown due to inclement weather).
My point was that a lot of the discussion that has happened in this thread is based on assumptions and prejudices for/against the gondola system. What sounds like a good idea on paper may not translate into good execution in real life. Let's see a year and a half from now after the bugs have been worked out how the system operates.
Me personally, I think there is nothing on property as efficient as the WDW Bus System. The amount of guests that are moved on buses quickly, reliably, and safely is remarkable. But there are the drawbacks, as there is with every transportation system out there.