because they played Liverpool in midweek in the cup they would have had two games inside 2 days up in lancashire , because the game at blackpool was to be last night, then Liverpool got the cup game switched to wednesday, so the FA allowed Cardiff to get a postponement.
all I know is that the FA gave them a postponment because liverpool moved the Cup game to wednesday rom tuesday , and then the away game at Blackpool was moved by sky to friday. The FA, I think, agreed with Cardiff it was unfair on the City fans to have to travel twice in 3 days to the North west and for evening games.... and thats what a City fan friend of mine told me.