You are definitely mistaken here – Jebus has the most basic graph. And in terms of gameplay: in the Small Map, there is still some possibility of close combat for adjacent secondary resources and disputed tier 3 locations; in Jebus, in 95% of cases, everyone just eats on their own for the first week, and then whoever eats the center first wins.
According to the scheme, yes, Jebus is the simplest. But in terms of gameplay, it can be more difficult to conduct battles on Jebus because there are so many of them... and you also need to know how to break into the center at the beginning of the second week... and what do you need to know how to do on the Small Map?