i find these days many many many songs are by an artist featuring Person A, Person B, Person C.
i myself used agoda to procure accommodation in asia. upon arrival i informed them of my details, to which they replied "you make reservation by expedia....". i stood there shocked and weary, then realised everything was correct bar the website name. so i summised that all of these sites are in cahoots with each other.
i disagree that conditions arent comparable. you simply compare "no cancellation" rates with each other, and "cancellation" with others of the same ilk.