so either it is bugged or by default non-supporter is awarded less points even if they ahve achieved teh same or more in a given category....
That's the point of the suggestion really. Non-Supporters do get the points (surely they are in the system, they just show the first line only), but they are not revealed because this is a Supporter feature. Yet, you can look at a page and see a total. That total is supposed to make sense if the user is a Supporter, it is nonsense if the user is not a Supporter. It is up to any user to check whether the user whose page they are looking at is a Supporter or not to make sense of the numbers. That's just total waste of everyone's time and a major usability fail.
Either don't have it show achievements AT ALL for non-supporters, or give us the exact same number of points for the same achievements.
Blank page for non-Supporters is also a worthy option. But to have some community bragging rights etc. the totals are important.
My suggestion:Show the totals correctly for all users. Keep the way how the totals accumulate visible only for Supporters.