No diffences between Left Sidebar page design and Right SidebarRight SidebarBrowser Info Environment
At the bottom, all themes tell you which page types they include.
Included Page Types
homepage, full, right sidebar, default, view
Notice that this theme does NOT come with a left_sidebar page type. So if you had a Left Sidebar page type installed before and you're trying to use it, it's going to use the "default" which is a right sidebar layout.