Just read what he says.
2013 - 13 747-8
2015 - 15-18 747-8
2015 - no more -400, all gone.
Today 13 747-8 firm orders. Another few (2-5 a/c) will be firm over next few years to be able to have 15-18 747-8 2015. The rest is options. And yes, even the newest -400's will be gone (8 years old by then). Not to competitors but to Oasis Hong Kong Cargo (yes, will open and feed to Cargolux from mainland to HKG, flown by Oasis pilots based in HKG) and to Silk Ways (flown not by CV pilots).
I hope I am wrong, but this is taken from facts and rumors.
http://www.flightglobal.com/articles...-cargolux.html