Both books contain outdated information, which makes them both inaccurate about some waters. I would say the information in them is pretty much equal, though. The book on the left is, IMO, written more consistently than the other, while the other is more attractive. Either one could be helpful at some point.
IMO, the best book of this type I know of is Mike Sajna's "Pennsylvania Trout and Salmon Fishing Guide," which has been out of print for a long time and contains even more outdated information than the two in the photo. However, he included a lot of interesting historical anecdotes in his book. You might be able to find it on a secondary market.
I wouldn't say "meh" to the second book, at any rate.