Can a bigger and stronger human level a city block?
Animated specifically went out of its way to make the Decepticons be one man armies to even a team of Autobots, including Elite Guard officers. They are living weapons in a way humans never could be, hence why I said '10ft tall with super powers' as my attempt to compare Animated Cybertronian society to a human one. Unless I've missed something, there are no 10ft humans with super powers running around.
The timeline presented in the Almanac actually addresses my initial concern since it does underline that there was imbalance in the society but the Decepticons are extremists who have twisted the apparently genuine oppression of their ancestors into a convenient line to excuse to their own greed. We can likely assume the Destrons may well have been giant power houses too but didn't have their splinter group's thirst for conquest. Hence how they were able to be 'oppressed'.
I'm more than willing to acknowledge where official sources actually address or explain the things about the setting that left me confused or I felt were lacking.