I've tried to make similar points, but Alan does it much better.

From Alan Boyle At MSNBC

When a planet definition would eliminate Earth and Jupiter under different circumstances or time periods it's just plain ludicrous. That's without even considering that you could apply the current definition to claim Earth and Jupiter aren't planets either due to NEOs and Trojan asteroids.

Plain and simple Pluto sweeps through a volume of space greater than that 1 AU around Earth without anything comparable to Mercury, Venus or Mars since it's 3D orbit does not cross Neptune's. If Pluto hasn't "cleared" it's neighborhood then neither has Earth and therefore Earth isn't a planet either. Same goes for Jupiter unless you can point out how the definition as worded specifically excludes Trojan asteroids.

Regards,
Mark