I din't know about cx vs and big airlines but compared to charter groung staff B.A crew are so down to earth on my 2 years of retail in the b.a terminal as well as the cabin crew.
and even though my sisters best friend works for emirates and i like her.
most of them dont give me a look and never have a smile on although you do get the odd 20% that seem nice. And its easy for me to tell more because i'm in a low end job.
But anyway one airline that i have always been given good courtesy from all staff is british airways.