Hey there

Both the colleges are good and placement wise and placement wise I'll suggest you to join psit Kanpur which is a college of repute though the college is private but if don't have better options then join it.

Check about psit Kanpur

https://www.google.com/url?sa=t&source=web&rct=j&url=https://www.careers360.com/colleges/psit-college-of-engineering-kanpur/amp&ved=2ahUKEwjLhq2Sj7LjAhXn7nMBHag9A84QFjAnegQIBRAC&usg=AOvVaw230d3GRsjOXcW-XVOV6zQW&ampcf=1&cshid=1563028843852

Good luck