I think we all know reading and listening are differing activities - no-one is disputing that. But if you have been through the whole book, word for word (and I do agree that unabridged versions are the only appropriate version - imagine skipping through a paper book missing out random sections!), then you can have said to have "read" it either way - it amounts to the same thing. I know as much about the book whether I have read or listened to it.
Anyway, as Hamlet53 says, these are personal challenges, and nothing anyone else thinks or says makes one iota of difference to my challenge. If I want to count reading the ingredients on the back of a Heinz 57 can as one of my challenges marked off, who's to stop me?
