HOwdy:
Awww, now I see where you are coming from. Briefly, no. Advancing or retarding the cam profile will not have an effect on CR. The static as well as the dynamic CR are effected by cam duration- from when the intake closes to when the exhaust opens.
ON lobe centers, no. Again, advancing or retarding the cam timing will not alter the lobe angles. But know that lobe angles will effect cylinder pressures and vacuum. Tighter lobe angles offer less overlap, the time that both the exhaust and intake are open. This results in higher engine vacuum, a smoother idle and, in general more torque. Wider angles go the other way.
Advancing and/or retarding a cams timing will effect when peak torque and peak horsepower occur. in theory, Advancing cam timing will increase low end torque and peak HP will happen at a lower rpm. Retarding cam timing will reduce low end torque and increase the rpm of peak HP.
Please note this is a very brief cover and, again many factors must be considered for the final outcome.
Hope this helps.
Adios, David