There was one interesting topic, here on the meta.

Here Is One Reason Why Legendary Members Get So Many Merits

She completely refutes what you said. I think you will change your mind about legendary accounts getting less merit. Also, take note that beginners who are just trying to get on their feet don't always pretend to be who they are. A lot of "manuals" created by beginners are subsequently challenged by more senior ranks. What does it say? Don't try to be cooler than you are. I see that legends get merits easily; they are natural. In addition, it is possible that they do not go in cycles for merits; the latter comes to them easily. 
If you just live on the forum and slowly increase your rank, it will come to you as quickly as possible. 
"Any action gives rise to a reaction." Just let go of your observation of who and how many merits are received.