It's tempting to say they're all a bit of a farce, but based on my own experiences, it seems that SQ and EY fairly consistently win various awards, and EZY for best LCC, and I think these are deserved. I do find some of the runners-up questionable though, and I remember that some years ago Cubana got one - which was for the 'most improved' carrier, which from a pretty low base may have been deserved.