I would like to apply for a Ph.D. in engineering in the US. My area of interest (control systems/dynamics) is closely related to (applied) mathematics. Would a reasonable but not outstanding result (e.g. 70%+) in the GRE mathematics subject test give me an edge during the admission process?
To be more specific, I would like to understand how relevant is mathematics subject test for admission to (mathematics-heavy) engineering programs (subject tests are usually not required for admission to graduate engineering programs) and what would be considered a high/low subject test score in this context?