The honors program at Northeastern is generally perks rather than a significantly different academic experience. This is typical at most high caliber universities and I wouldn’t make it a big part of your decision.
Are you looking at the US News graduate rankings? If so, those are based on a single survey of other schools (unclear who even fills them out), are asking about the graduate program only, and have an under 40% response rate from schools. If you wanted to actually look at graduate CS strength, research is a pretty good proxy for that, and USC and Northeastern are very much peers in that respect.
You can find that data here: http://csrankings.org/#/index?all
All that said, you’re going to undergrad, not graduate. They generally both do have very good reputations and industry connections though, so generally I don’t think ranking really separates the two here.
I’m a bit biased here as a Northeastern CS student, but I would highly recommend its teaching approach detailed here which is worth a read: http://www.ccs.neu.edu/home/matthias/Thoughts/Developing_Developers.html
I’d recommend choosing here based on fit, cost, and location. USC has LA a very traditionally sports/greek campus scene. Northeastern has Boston and more of a city school feel with social life focusing on Boston and then of course the big difference of co-op. Which do you prefer? What about cost?
Congrats on two great options! As long as both are affordable there really isn’t a bad choice here 