Columbia's MFE is unparallel when compared to Cornell's MFE solely due to its advantage with respect to the location. While career services is a factor to consider, it is pretty obvious that they are not going to spoon feed anyone and it is the student who has to network, build connections ultimately to land up with a job. I have talked to many students from Columbia and Cornell and I understood how location of the university matters a lot especially when it comes to quant roles. Also, many Columbia students agree that career services at Columbia is not as bad as everyone thinks, just that they are below par when compared to
CMU or Cornell. Still they are good enough to achieve almost 100% jobs to all the students. Once you complete your degree with decent scores in either of Cornell or Columbia, it is most probable that you end up with some job but all that differs is the kind of role and location you land up with and I think it's better with Columbia. Congratulations for your admits and all the very best.