The 1910s were certainly a much different era of baseball than the one we're currently experiencing.  Nobody accuses anybody of using steroids.  .400 seasons are relatively common.  The save doesn't exist, and the relief pitcher barely does.  Possibly the biggest difference is the lack of the home run.  Frank Baker led the major leagues in home runs for four seasons in a row from 1911-1914 with 11, 10, 12, and 9 HRs respectively.  These monster power seasons earned him the nickname "Home Run" Baker.  Here's how his production levels and home runs line up.

Wins Above Replacement data from www.baseballprojection.com

Home run data from www.baseball-reference.com