Hi Saurabh
You are absolutely correct that it depends on person to person. I have seen in my short career of 7 years in SAP, folks managing small projects as PM. These folks have been excellent consultants, who have been able to translate Business Process into SAP and have been very good team managers. They have always supported team members and were meticulous. They have grown year on year and are Project Managers. PM in the SAP world are a bit different from other technologies, in that they should be able to talk and breath Business in addition to their management skills. This is again my personal opinion.
Some of the folks who are excellent team leads have also chosen to broaden their skills in technology and have adapted the newer fields in Mobile, HANA and so on from traditional areas like SD, FICO and MM to name a few.
On the other hand, I have also seen people with more than 10 years of exp, in the comfort zone, happy and contended with the position they are in. These folks have neither adapted to new changes and are still happy with what ever they have been doing for last so many years.
So at the end of day, I strongly believe, it is clarity of thought & passion alone which drives a success. It is really hard to put an exact no of years in which can arrive at X level.
Thanks & Regards
Sanil Bhandari