@the OP - I went through this myself last season as I wanted to track my stats and evaluate my putting. So my answer is ONLY in context of how I kept stats to allow me to evaluate my game.
I quickly realized that what I wanted the stat to tell me is where did a failed putt cost me a stroke (opposed to a bad drive or upshot, etc). To this end I put the "blame" on the appropriate shot in my scorecard. If I score a 3 with 2 putts my drive was OK (or good) and I missed a putt. If I score a 3 with 1 putt I had a poor drive (or at least not within my comfort zone) and assign the stroke to the drive, not the putt. For example - a open 250 hole. I screw up the drive and land 45' out. Sure, I am using a putting stance and stroke and am trying to put it in the basket, but at the end of the day when you ask me where I messed up...its the drive....not missing a 45' putt.
Taking this approach has really cleared this up for me and makes it easier to evaluate when I am having an off day. Quite often when I think I'm having a bad putting day I look back and realize that I've assigned the blame to the drives more than putts that day and seemed like I was missing a lot due to bad drives putting me in poor positions.
I quickly realized that what I wanted the stat to tell me is where did a failed putt cost me a stroke (opposed to a bad drive or upshot, etc). To this end I put the "blame" on the appropriate shot in my scorecard. If I score a 3 with 2 putts my drive was OK (or good) and I missed a putt. If I score a 3 with 1 putt I had a poor drive (or at least not within my comfort zone) and assign the stroke to the drive, not the putt. For example - a open 250 hole. I screw up the drive and land 45' out. Sure, I am using a putting stance and stroke and am trying to put it in the basket, but at the end of the day when you ask me where I messed up...its the drive....not missing a 45' putt.
Taking this approach has really cleared this up for me and makes it easier to evaluate when I am having an off day. Quite often when I think I'm having a bad putting day I look back and realize that I've assigned the blame to the drives more than putts that day and seemed like I was missing a lot due to bad drives putting me in poor positions.