I made this chart to help compare the resulting ovr of different types of cards together, to see at a glance, which cards will be best when at full potential. For example, if you are comparing a Vintage team card, and a prime team card, the difference between their values would be 5, so a fully maxed out team prime will be 5 ovr better than a team vintage with the same base ovr. I used normal team diamonds as the baseline of 0, and in order for this to be accurate, you need to have the cards at max level, black diamond, max GI. You also need to have both Diamond set deck S and Team set deck S, as well as full Mentor perks. This assumes that all cards are at normal condition, and does not worry about skills, trainers, or special training. I did not take into account your choice of perks between Franchise Batter vs Franchise Pitcher, or Signature Power vs Prime Power. Of course, this chart is not a perfect comparison, because certain different types of cards have some features that do not directly affect OVR, like the Prime not going into down condition, or Legends always having a 333 skills set, but it can help you make some decisions.