About: http://webisa.webdatacommons.org/217851181

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	I think one reason could be that the RR has a higher fuel consumption than the P & W and GE. Of course there are other considerations such as commonality, price and maintenance costs.
http://www.w3.org/ns/prov#wasQuotedFrom	airliners.net