I think you have to be very wary of using some of these arguments - there is a bit in the FAQ worth thinking about :
It would be unwise, though, to set out to criticise the system, as this rarely goes down well! If the local admission arrangements are lawful, an appeal panel has to accept them. An appeal gives you the opportunity to ask the panel to consider alternative evidence of high ability.
So distance, what the score was last year & having to get a higher score than younger children are all things related to local the admission arrangements. Also if you think about it, the reasons quoted could apply to a very large number of people. best to concentrate on academic evidence for your DD