Don't buy the bike based on MPG or KPL, you'll find yourself continually staring at the fuel gauge, which in turn will blink back at you.
Fuel consumption is directly proportional as to how hard you are with your right wrist or the amount of traffic you are stuck in, it is purely subjective.
Buy it for the same reason everyone on this forum has, and that is the fun factor and enjoyment you will get riding this bike, something the MT/FZ 10 has in spades.