The phrase "are based rather on" is correct and usable in written English.
It can be used to indicate that something is founded or grounded on a particular basis or principle, often in contrast to another basis.
Example: "The conclusions of the study are based rather on empirical evidence than on theoretical assumptions."
Alternatives: "are grounded more in" or "are founded primarily on".
They are based rather on the principle that 'distinctions between citizens solely because of their ancestry are by their very nature odious to a free people whose institutions are founded upon the doctrine of equality,' Hirabayashi v. United States, 320 U.S. 81 (1943).
Within the questionnaire CAM was defined as 'all non-conventional therapy methods, which are based rather on personal experience than on a scientific basis'.
This suggests that decisions of all age groups are based rather on the distance than on the speed of an approaching car.
Our approach to graph modelling and querying is based rather on conceptual structures than database ones.
He is well aware that the Khatami era and the street protests after the disputed 2009 election opened up bitter divisions within the political class: his approach is based rather on incremental change and building agreement.
The separation, for example, between intellectual and sensual aspects of the soul is based rather on differences in social class.
It is based rather on the integration of modern philosophy, epistemology, logic, denotational mathematics and cognitive informatics using engineer's perceptions rooted from intuition, commonsense and experiences without logical reasoning based on binary logic.
It is based, rather, on the assumed effect of all the extra engagement with companies that UKTI and the Department for Business undertook as part of its Olympics business strategy.
We suggest that the estimates of leaf pollen deposition should be based rather on measured data, as shown in our previous integrated assessment study using standardised methods [3, 26].
China's argument is based rather on the important role of the state, on the significance of sovereignty.
The little existing information regarding caveolins in OC is based rather on experimental researches [ 83, 106– 109] than on human ovarian tissue specimens [ 110, 111].
