From my reading on the bfl links and Lyle MacDonald site, I gather the 6 meals per day is helpful because its giving you a constant supply of amino acids for muscle repair, eating smaller more frequent meals will lower insulin levels and help stabilize blood sugar, possibly improve fatloss. As a hypoglycemic I've found eating more frequently very positive in terms of blood sugar control.

Read the links and personalizing to your body type will probably lead to the best result for you.