By installing the cam gear "dot to dot" you are assuming the timing gearset is absolutely correct, which many are not. Also that the cam grind is correct, which some are not. There are a lot of posts in this forum about people having performance problems only to find out (when the cam installation is checked using a degree wheel) that it was installed retarded. Think about this for a minute. The engine is a system. All the pieces of the system must work together to achieve the desired end result. All of us have made past mistakes by installing parts that someone recommended only to find out it did not work properly in our build.