I took both 25 years ago, at 16. I think my ACT composite was 30 or 31 (out of 36). The SAT was 1360/1600. No test prep, and my working-class parents were willing to pay for only one round of tests. In 1994, those were above the 90th percentile. I doubt the percentiles would be as high now. My highest component scores, by far, were always on the verbal sections.
Took the GRE in 2005, got a 700/800 math, 730/800 verbal, 4.5/6 written. I think only the verbal was over the 90th percentile. Good thing I didn't go into engineering.