i think its a compicated question to answer.
a grower takes the time (say 3months) and the risk of having the grow, and for that he gets his weed for a cost of next to nothing (im not including equipment jus to try and keep things simple). say he sells all his weed wholesale for 200oz hes probably making 150ish profit which whatever way u look at it is good business, he doesnt really have to leave his house or deal with lots of dodgy people to get that money.
the dealer on the other hand has to run about everywhere and build up contacts and take a lot of risks in order t0 make his money, where i live a dealer can make jus under 400oz. which seems like alot more then he should be again you need to factor in all the time and running around that goes into it.
i think the grower will always make more 'real' money as he doesnt have to do a lot to get it in the first place, the dealer on the other hand will make more but will have to work harder and take more risks for it. which is fair because without the grower there to start with the dealer wont beable to make a penny