Both are Top 5 programs, both turn out great surgeons. CVs and CTs, especially, from either program are in the highest of demand.
But, Baylor has more to offer simply due to its program size and surgical facilites (located in The Texas Medical Center) You can walk around and see leaders in their surgical fields - Baylor Chairs and Chiefs tend to come from in-house (eg. Noon, Coselli, O. Frasier, etc.), but, they do bring in great talent as well (eg. Brunicardi, Loebe, C. Fraser, Lin, etc.)