[Intimidator]

No, The Dominion and 8472 are not only more advanced but they have huge empires of their own.
The Dominion occupies a large part of the Gamma-quadrant. And 8472 even have their own Dimension.

So to simulate that they start with larger planets than the Alpha quadrant-majors.

But there are a lot of Alpha-quadrant-majors, so if 2 or 3 of them work together they can withstand at least one of them (8472/Borg/Dominion)

Inti,