c'mon man you know it's a probability game. this is based on my personal acquaintance/convo with MIT Mfin (3+) and MSCF (10+) students and It's not that you wouldn't land a job, it's just harder. feel free to get in touch with them and see if you'd be told otherwise.
(1) summer internships feed more than half (in some cases all) of the incoming analyst/associate classes for banks (2) NYC is not the home court for MIT Mfin grads (MSCF on the other hand has decent presence on wall st.) and Boston is more of a buy-side town and therefore is not really ideal to launch your career in finance (3) unlike MSCF, Mfin is still building up its alum network
Agree that summer internship is important in landing a S&T gig, but that's just for people without experiences in the same field.
MIT will give you opportunities to interview with top buy-side firms, whether fundamental or quant, top consulting firms and IBD-positions.
MIT's presence on the street is probably more influential than CMU.
As for S&T, I guess MIT MFin will give you the interview. Of course, if you are fresh graduate without any previous finance courses / experience, you wouldn't get the offer. My point is, it depends on YOU.
So in the end, it's really IBD/Buy-side/consulting/S&T (MIT) vs S&T / Quant (CMU). If he is not good at coding, he will be killing himself taking up the CMU offer. Even if he survives CMU, he will not like being a quant, and suddenly, he has limited his career path to only S&T. And trust me, trading is not about coding. Coming out from CMU program will put him an a coding position, probably monte carloing / in-house pricing derivatives all day and the feed the prices to traders software. Lot's coding and system maintenance once again.
In fact MSCF has placed a big chunk of its students into S/T (not quant). If you are to make any generalizations here (BTW better to support your claims with sources of information), I'd say go with MSCF for secondary markets positions and go with Mfin if your not sure which area of finance you want to delve in.
FYI I've met a couple of Mfin students in IBD ACs but wasn't really impressed by their background/performance, but then again it's based on my own observation and can be subjective.