Wing loading is not a very good indicator of how well an airplane will fly.

For an "apples vs apples" comparison wing loading is a most salient and excellent indicator of how a particular model in its class will manoeuvre or handle/penetrate meteorological or orographically induced turbulence.

For the confused newbies, here's a link elaborating upon the "pseudo-theoretical parameter" referred to as "wing volume loading".

http://www.genesis-rc.com/wacoymf5/wing%20loading.htm