I don't think it over-claimed anything? Maybe over-simplified for certain purposes. But to expect a press release to be a complete accounting of the research it

I don't think it over-claimed anything? Maybe over-simplified for certain purposes. But to expect a press release to be a complete accounting of the research it reports on is to misunderstand the purpose of press releases. A press release that says everything that's in the paper would be pointless and redundant.