The phrase "a dramatic disparity" is correct and usable in written English.
It can be used to describe a significant difference or gap between two or more things, often in a way that emphasizes the severity of that difference.
Example: "The study revealed a dramatic disparity in income levels between urban and rural areas."
Alternatives: "a significant difference" or "a stark contrast."
"It would present a dramatic disparity and you'd begin to wonder how you can retain an economic structure that allows teams to earn such disparate amounts of money".
Her campaign noted that the prison incarceration rate for African Americans in the county declined during her tenure, though experts said that did little to ameliorate a dramatic disparity between black and white prison rates.
Census records show a dramatic disparity in education.
The American Small Business League ASBLL) has concluded an examination and report on President Barack Obama's track record for small businesses, and uncovered a dramatic disparity between President Obama's rhetoric and his actions.
A dramatic disparity between the two strains was observed following infection via both the s.c. and the airway routes.
Again, there is a dramatic disparity in the current number of numts per genome and the expected abundance prior to the KT boundary, with the latter being ∼288 (127)× the former, and an expected decline to just 7% (4%) of current levels into the future (tables 2 and 4).
"For the first time, there is a pretty dramatic disparity in favor of the Democrats.
Racism has been blamed for the dramatic disparity between a light sentence a white official received for knowingly turning in fake petition signatures compared with jail terms given two minority women in the same Texas county who say they didn't know they were ineligible to vote.
The previous version of this policy led to a dramatic wealth disparity in Iranian society that only worsened as opportunistic members of the regime lined their pockets with the profits they made on smuggled imports.
Asked why there is such a dramatic price disparity between the US and UK, if software is digital - and the UK is effectively a sales arm - Adobe replied: "Even though we live in a digital world, the cost to market and distribute our products through our various channels varies regionally.
There is a dramatic geographic disparity for the incidence rates of ICC that mainly correlates with difference in environmental risk factors.
