The phrase "as much seriousness" is correct and usable in written English.
It can be used to express the degree or extent of seriousness in a particular context or situation.
Example: "The situation requires as much seriousness as it does creativity to find a solution."
Alternatives: "the same level of seriousness" or "equal seriousness".
He asked voters to treat the straw poll with as much seriousness as Election Day.
Treat the application process with as much seriousness as you would for any other full-time job I the world.
Since Lang was more of a brilliant journalist than an anthropologist, his view was not taken with as much seriousness as it should have been.
Rebelle is one of those places that regard the wine with as much seriousness as the food, with a list that verges on a tome, and a sommelier eager to show off the funkier corners of his cellar.
But no sooner does she venture out into her genteel and elegant neighborhood than she bumps into an acquaintance from the French Foreign Ministry who, giving her the once-over, promptly makes "what he considered an important point with as much seriousness as if he were delivering diplomatic démarche to a recalcitrant ally.
This must mean that an Iraqi death or injury is treated with as much seriousness as an American or British one; we must investigate an apparent "disappearance" of an Iraqi citizen with all the urgency as would a hostage-taking involving Russian, Chinese or Japanese nationals.
Although they described themselves as non-practicing Catholics, both said Fillon's Catholic identity appealed to them at least as much as their perception of his seriousness.
Romney tends to avoid the press as much as possible and it is a sign of the seriousness of the situation that he had to make an impromptu statement.
The situation landed NFL in as much trouble publicly as it did Rice, with many questioning the seriousness with which the NFL takes domestic violence issues, or more generally, if it values its female audience.
He is traveling as much as ever, he said, with his doctor's blessing, and dismissed the seriousness of his disease.
We have become as much social movement as sport between our vast outreach to individuals and the seriousness with which we take our social responsibility as we run through towns and cities around the world.
