I like baseball stats, though I like sabermetric stats (BABIP, FIP, etc) more than the type that you posted here. Part of my problem with the Elias-type matchup stats that you mention is that the tiny sample sizes make most of them meaningless.
For those interested, I think the best site for sabermetric stats and analysis on the internet is fangraphs (
www.fangraphs.com) - they have a definition section that tells you what each stat is along with articles explaining them and tons of great articles about player performance. The database also goes really far back - speaking of which, Ty Cobb hit .323 in his age 41 season, how crazy is that?