No simple answer, but generally the softer the mid and tip stiffness are the higher the trajectory. You can have a softer mid section and stiffer tip section that is not a higher trajectory. You can also have a stiffer mid section and softer tip section that may not be a “high” trajectory. Every manufacture is different and the overall profile, materials, taper, wall thickness, etc. all contribute to how a shaft will play for any particular individual. I guess what I’m I’m saying is that the trajectory identifier for any particular shaft build is a generalization based on the information we receive from the manufacture and our own measuring data. How a particular shaft will react to you can only be dialed in by testing on a reliable launch monitor and observing the launch and spin numbers. I think you will find, and we have found this over the years, that variances in shafts of the same flex and weight but with different trajectory and spin features really don’t vary that much. The higher the club head speed and the more precise the strike is when you may see variances. Also, it is safe to assume that slower swing speeds will benefit from softer builds that can generate higher launch angles. As far as our data, we don’t publish our complete data base of material. Jim’s constantly updating it. The link below takes you to the basic information we have on our website. If you have specific shafts you want to compare, you can list them and we can tell you what our data says.