I just did a landing using real weather with AS2012, and the 777 landed right in the centre of the runway (dare I say it went perfectly?).
I am not getting the same results with ASN. Recently, every landing using ASN has resulted in an off centre, or off runway landing. When the 777 v1.4 was first released, I am sure that I was not having problems with ASN and the 777.

I know I only use AS2012 for P3D, but that's because (1) ASN for P3D is in BETA and I did not sign up for it, and (2) I don't need to buy AS2012 for P3Dv2 as it already works with it!

I will do some more tests with the 777 with AS2012 and ASN and see how it goes, but I must admit that it isn't looking good for ASN. :(