Such may be the case in other eras, but in MA? I don't think so... Let us consult the Great Oracle who sayeth:
Mid(68.000000)
MA Pythium : 9.00
MA Shinuyama : 6.00
MA Pangaea : 5.50
MA R'lyeh : 4.50
MA Abysia : 4.50
MA Jotunheim : 4.00
MA Mictlan : 4.00
MA Ulm : 3.33
MA Ermor : 3.00
MA Caelum : 3.00
MA Marignon : 2.00
MA Oceania : 2.00
MA C'tis : 2.00
MA Vanheim : 2.00
Nehekara : 1.50
MA Machaka : 1.33
MA Man : 1.33
MA Ulm Reborn : 1.00
MA Arcoscephale : 1.00
MA Arga Dis : 1.00
MA Ashdod : 1.00
MA Atlantis : 1.00
Itza : 1.00
MA Bandar Log : 1.00
MA Nehekhara : 1.00
MA T'ien Ch'i : 0.50
MA Agartha : 0.50
It appears that your selection, Ermor, has a much higher win rate than Ashdod, and Pythium seems the least balanced. I hold the opinion that Pythium is still the most powerful MA nation, but I would never request that someone relinquish their selection of it.
According to the chart for other eras, only Hinnom has a high win rate, and even that is eclipsed by Sauromatia. Perhaps you are simply intimidated because we're bigger than you? Hwahwahwahwahwa!