The original poster in this thread never even mentioned interest in investment banking. How and why did the discussion go there? Not every kid wants this for a career.
Also, for WashU, applicants apply directly to the business school and begin freshman year. For Emory, all students are admitted to Emory College and apply to Goizueta Business school for enrollment either in their spring term of sophomore year or fall term of junior year. Since GBS admits over 80% of applicants, overall it might be easier to gain admission. You would still take pre-business required courses at GBS such as financial accounting, statistics, calculus, writing, etc.