ACT/SAT vs. GPA vs. Extracurriculars

UT Austin is incredibly odd with admissions. I have a 4.2 W/3.83 UW, 33 ACT, STELLAR ECs, great essays, great rec., etc. and I got CAP for COLA. Meanwhile multiple people from my school got in with 3.5s give or a take a few points and low ACTs. Not only were they admitted, but some where admitted to McCombs.