You still do not understand what I am talking about!
An unenchanted diamond pickaxe, made with three diamonds, can mine 1,562 blocks; each diamond is good for 1,562/3 = 520.67 uses.
With Unbreaking III, to quote the Wiki "For most items, (100/(Level+1))% chance a use reduces durability. On average, lifetime is (Level+1) times as long."; this means that those 1,562 uses becomes 1,562 x (Unbreaking III + 1) = 6,248 uses. That now means each diamond is good for 6,248 / 3 - 2,082.67 uses!
I NEVER said that you'd get 4 diamond per ore, no, that is EFFECTIVELY 4 diamonds per ore; as I clearly calculated a single diamond used to make an Unbreaking III diamond pickaxe is good for more uses than an entire unenchanted pickaxe! Yes, you may take longer to find diamonds at first but later on when you only need them for repairing you only need 1/4 as many!
What he's trying to say is if you used the pick to only break diamond ore, the fortune pick yields less over its lifetime compared to the unbreaking pick.
Yes, that's exactly what I am saying, with the end result that you consume less diamond in the form of ores mined. Both together of course are even better and Fortune makes it easier to initially get diamonds, factoring in diamonds used, diamonds mined, and time.
Also, I'm not sure how anybody can disagree with ores being more common when multiple independent analyses show that it is more common; sure, any random tunnel will vary significantly in the amounts of ores you find; similarly, I've seen some people claim that caves are more common in 1.7+ because they found a lot in small area of one world - you need to look at the bigger picture to get a true sense of how rare/common something is, not just a small area of one or two worlds.