99.999% is very inaccurate, mostly because in any estimation you should allow 5% for mistakes therefore at the least you should have said "154 million more mega pixels than 99.999% of photographers will ever need." Which would be much more believe as this camera would be marketed tot that photographers.
However, 95% is so inaccurate when you look at the large scope of wealthy photographers. Like any other hobby that requires one to collect many different types of equipment, I'm sure many photographers with the money to blow could justify purchasing this camera.
But that's just what i think.