If I matched these tools I would be poor..... I never use the lines on any mat for any reason. I just use the ruler lines.
The only thing I really 'match' in this department is when I cut out I try to use the same ruler through the project. Different rulers may be different measurements from each other. I have QIAD, Kaye Wood, Olfa and a few other rulers with a very old Olfa mat, a self healing 12 inch Omni spin mat, and a Fishar's mat. It just depends on where or what I am cutting on what mat I use.