Hi Candidate! According to my opinion Sastra college is better than Anna because the main advantage is it is a university college, and hence there are many advantages and so many privileges. But colleges under Anna University won't be having those provisions and privileges. The placements are very good compared to the affliated colleges wherein the placements are less. Also the package is high in Sastra University compared to the average salary in most of the affliated colleges of Anna University. 

So in short Sastra has better syllabus, academics, infrastructure, culture, placements, faculties facilities. So Sastra is better than Anna 

Hope it helps.

Thanks.