If the soil is acid enough for centipede grass to grow well without special fertilization and soil treatment, bermuda is not that aggressive. Under those conditions, bermuda is weak and stringy. On the other hand, fertilize the area with a high nitrogen, high phosphorus fertilizer, and correct the soil pH to between 6.5-7.0, then the bermuda will become very aggressive. Centipede is a niche grass that thrives in soils that are too toxic and deficient for other grasses to grow. Many weed problems, including bermuda invasion are caused by materials applied without knowledge of what centipede needs and does not need.
They who can give up essential liberty to obtain a little temporary safety, deserve neither liberty nor safety.
Benjamin Franklin 1775
Sell not virtue to purchase wealth, nor Liberty to purchase power.
Benjamin Franklin Poor Richard's Almanac1738