The QS Latin American Rankings show some interesting variations in methodology. The academic survey has a weight of 30%, compared to 40% in the World Rankings, and the employer survey a weight of 20%, compared to 10%.

Instead of 20% for citations per faculty there is 10% for papers per faculty and 10% for citations per paper. Since there are great variations according to the measures used to count research output and influence, as shown by the recent Leiden Ranking, this is very sensible.

Faculty-student ratio is reduced from 20% to 10% and international students and international faculty are removed. There is now 10% for proportion of staff with Ph Ds and 10% for web impact. 

Here are the top five.

1.  Universidade de Sao Paulo
2.  Pontificia Universida Catolica de Chile
3.  Universidade Estadual de Campinas
4.  Universidad de Los Andes Colombia
5.  Universidad de Chile