The phrase "a much more damaging" is correct and usable in written English.
It can be used when comparing the severity or impact of something in relation to another.
Example: "The new policy has proven to be a much more damaging approach to environmental conservation than previously thought."
Alternatives: "significantly more harmful" or "far more detrimental".
And politically, this is a much more damaging tale.
"Only time will tell if the HSBC cyber-attack is simply a DDoS attack or a cover for a much more damaging intrusion into their systems".
But its inept handling of the accusations left the firm exposed to a much more damaging allegation: that it is aggravating the growing global problem of fresh-water scarcity.
He presents this much-ignored aspect of Roosevelt's thinking with sharp specificity ("I am so angry with that infernal little Cuban republic that I would like to wipe its people off the face of the earth," Roosevelt wrote in 1906) and then goes on to make a much more damaging point, angrily and persuasively connecting Roosevelt's race-based foreign policy miscalculations in Asia.
Under similar circumstances, eruptions exceeding VEI 3 4 could have a much more damaging effect.
A blistering story on the front page of the Wall Street Journal the same year about KKR's buyout of the Safeway supermarket chain painted a much more damaging picture.
In this country it is largely circumvented – when it seems right to the priest – by the argument that refusing a couple at the communion rails would cause a scandal much more damaging than the original offence.
Whatever the truth, Cameron's rivals have been quick to use the revelations to reignite a potentially much more damaging issue for the Tories: party funding.
They are still common in the railroad industry, where unions negotiate jointly and a strike is much more damaging to the country's economy.
The Neapolitan novels can be read, in part, as an illustration of how much more damaging such attitudes are for those who don't have the knowledge or resources to seek diagnosis.
A big hurricane would be much more damaging with high sea levels, Dr. Solecki says.
