"Size discrepancy" refers to a difference in size between two or more things, where one is larger or smaller than the other.
Sentences with «size discrepancy»
The vast weight and size discrepancy between tractor - trailers and passenger vehicles creates exceptional dangers on the highway. (injuryjusticelawfirm.com)
Except for the subtle body size discrepancy, she looked perfectly healthy. (sciencemag.org)
Con # 6: Huge size discrepancies can be a real problem. (poochprofessor.com)