These skytrax rankings are really a joke. Many claims that the amount of advertising spent by airlines on skytrax (and related entities) is correlated with rankings. I wont comment on obvious jokes in the rankings, but there also many inconsistencies. For example, the global ranking is:
1. Qatar Airways
2. Singapore Airlines
3. Asiana Airlines
4. Cathay Pacific Airways
5. Thai Airways International
6. Etihad Airways
7. Air New Zealand
8. Qantas Airways
9. Turkish Airlines
10. Emirates

Their ranking in Asia region is consistent with above:
Best Airline Asia
1 Singapore Airlines
2 Asiana Airlines
3 Cathay Pacific Airways

But the transpacific ranking is totally inconsistent. I guess they wanted to give a prize to NH and KE anyhow.
1 Cathay Pacific Airways
2 ANA All Nippon Airways
3 Korean Air

However, there are a few interesting points for CX. It has the best F class seats but is only third on overall F class product. Personally, I would agree on that point as food, wine, lounge are not top.