Career stats do often give unclear pictures. Players who had good to great careers but are post prime are sometimes regarded as better than maybe they really are at the point in their career. Its' maybe one reason 30-32 year old free agents get overpaid. In HRam's case, he's just approaching traditional post prime years. There's still a significant chance he has another very good season or two. There's also a significant chance he'll never come close to h s 2016 season again.
The other area where the picture often becomes "unclear" is with players in the early part of their career who either started off very slowly (like JBJ) or very well and then went on to have better or worse careers than their "career numbers" seem to indicate they should
be doing (to some).
I think one needs to look at what point a player is in his career, weigh his career numbers against his most recent 2-3 year numbers and trends, and then consider that not all players follow traditional bell curve careers. In short, going forward, I would expect JBJ to do better than his career numbers over the next few years, and HRam to do worse than his career numbers over the next few years.