I feel that the entries need to be more concise.  I don't think they need as much flair as the books, but just a short description.

Using different wording between the books and the site would open up the possibilities for misinterpretation or ambiguities that otherwise aren't a problem. It also increases the likelihood of errors if people make mistakes in the descriptions.

Yeah I'd rather the wording be the same as the books to avoid confusion or misinterpretation.

Editing down the content between the sources makes maintenance a huge pain going forward.

In this format, they're able to write a parser that automatically extracts the content of the digital SRD.

This also drastically cuts down the time required to incorporate any errata into the system.

In short, having slightly wordier references for the benefits highlighted above seems like a fair trade.