The phrase "are far less aggressive" is correct and usable in written English.
It can be used to compare the level of aggression between two or more subjects, indicating that one is significantly milder than the other.
Example: "The new policies are far less aggressive than the previous ones, promoting a more collaborative environment."
Alternatives: "are significantly less aggressive" or "are much less aggressive".
The Fed's European counterpart, the European Central Bank, has been far less aggressive in cutting rates.
O'Connor is far less aggressive and seems more vulnerable in person than I expected.
The implicit message was that the Trump Administration would be far less aggressive in its oversight of rogue police departments.
While many Western states are building new power plants, efforts to build new towers and transmission lines have been far less aggressive.
More than a year after New York City announced that it would require hundreds of thousands of failing students to attend summer school, preliminary enrollment numbers released by the Board of Education suggest that the program is far less aggressive than had been promised.
In analyzing the Fed's failures during the Depression, he seemed to be taking clear aim at some of his current critics — and perhaps at other central banks that were far less aggressive after the credit crisis.
Like Harvey, Hval pursues two of the big themes, power and desire, but where Harvey, especially on her early albums, seemed to parody or role-play masculine bravado, Hval's music is far less aggressive than her lyrics might suggest.
The Sony Corporation, whose acquisitions of Columbia Pictures and CBS Records in the 1980's helped to stir a furor over what some American commentators described as the imperial ambitions of Japan Inc., is far less aggressive today.
Despite sporadic outbursts of hostilities between police and demonstrators in Sheikh Jarrah, the overall tone of the marches is far less aggressive than those occurring simultaneously a few miles away in Bil'in and Nil'in.
"And it would not surprise me in the least," he said, "if a lot of these cops were far less aggressive in defending citizens, and far less likely to get involved in what they ought to be doing -- which is, quite frankly, busting a few heads and taking those folks to jail".
