Shintaro Abe, I'd say you've been spoilt.
I've been on the 777 for the last 2 years, and for context the 757/767 for 6 years before that.
I fly every variant of the 777, and the same technique works equally as well on all of them, in a gusty crosswind I always touch down one wheel first, i.e. decrab then a little upwind aileron and rudder which results in a nice kiss with the tarmac. As for the de-rotation, that's more finesse than anything else
