The DPI slider in the display area of the control panel is at 100% in both systems. Let me summarize what I'm seeing again from the bottom up.
task bar - text, icons, and line height same on both machines
status bar - text and line height different on the 2 machines
URL viewing area - text and icons same on both machines
menu bar - text and line height different on the 2 machines
address bar - text, icons, and line height different on the 2 machines