Good Trainers?

[Rebelsunited]

This is the proof only , I don't know the explanation .

[Toxcatl]

This is the proof only , I don't know the explanation .

Let me explain again with the given examples.

There is a hidden parameter (I call it Talent) that determines the pace of training.
If I remember correctly, there are only three parameters that affect Value, namely, Age, Quality (overall) and Talent. Ahman has Value 93.3 because his Talent is higher than Lupu's with his Value 90. But there are no steps in the Value (and, therefore, Talent). Imagine the 3rd players with the same parameters, but his Value is 90.1. Is he FT or SFT by your classification? What about Value 91? Or 92? Or 93?
Where is the border between FT and SFT? Only in our heads. This border is not in the game mechanics.
So my conclusion is: there are fast trainers and slow trainers with blurred border between them, because it's our construct. You can add more borders and grades to slow trainers or fast trainers, but it will be "sturgeon of the second freshness".
The second grade fast trainer is a slow trainer, 'nuff said.