Phileas / Sultan
I think the posters company may have travel bars on the carriers you mention due to their own insurance policy for their employees especially if they have a lot of staff travelling worldwide. My own company has such a policy and there are carriers we are not allowed to use unless under exceptional circumstances / no alternative, and I do not think the route to Beijing from Europe would fall under that ruling in my case, if not the posters wife company as well. As previous post Lufty all the way would still be my selection, and indeed have done this route earlier last year in a new 747, although your selections do have both merit, and are a little more off the wall shall we say.
Regards
Mr Mac