Hi!
Hm... I don't know the math behind these RCI values, I don't really care about math generally (specially in this game), but I do know that
the size of the building/model (I'm not 100% sure but, maybe more precisely the LOD size of the model)
does matter how many jobs the PM will offer to you. I never used Maxis PM, because since I've started lotting and modding I always used
SC4 PIM-X (X-Tool) for lot making, prop creation etc... And this one even have a little bit different although more precise mechanism with better and more accurate values.
So short answere is that regarding jobs the size of the model does matter, but the size of the lot is rather irrelevant. You can have a small normally 1x2 size building on a 4x4 or even bigger lot, the PM will offer to you that 29 jobs, while you have a bigger 2x3 model on a 2x3 lot and you will get that 50-60 jobs, with the smaller lot.
IF i'm not mistaken. I know that PIM-X working like this (with a little extra, which helps you get more accurate values by using the filling degree property), I assume Maxis PM is working somehow the same way, but there are more experienced players out there who know the math behind the game better.
- Tyberius