Deletion of List of largest airlines in Europe

Comment: A few of the individual entries are not sourced, but this is a matter for clean-up, not deletion. It isn't a |"Synthesis of published material serving to ''advance a position''" to rank airlines.  Also from  "Research that consists of collecting and organizing material from existing sources within the provisions of this and other content policies is encouraged: this is "source-based research," and it is fundamental to writing an encyclopedia."  I don't see how ranking airlines in size violates the spirit of  which is essentially an extension of 
Stance: keep
Cited policy: Wikipedia:No original research (WP:SYN||WP:OR||WP:OR||WP:NPOV)