Does going to a top 10 law school matter more than graduating from a Top 10 CS program?
Many other industries tend to recruit only out of top universities, and getting into them if you didn't go to one is basically impossible. Management consulting, investment banking, hedge funds, philanthropy, many managerial government positions. The way you get into these is through going to a school that places lots of people into those industries, and then work the network.
(at least the bimodal bit and ivy->faa[n]g route)
I have both law and software engineering degrees and I can tell you without a doubt that yes, the school you graduate from matters much more in law.
"Software engineering" doesn't have much to do with either software (it's mostly generic project management) or engineering (ask an engineer: vector calculus! statics, dynamics and thermodynamics!)