I disagree completely. In my opinion, quite the opposite, actually. "How to win friends..." gives you shortcuts in life. It's all about pretending to be someone else to get short-term gains. Doesn't work quite as well in the long term though.

"7 Habits" is about how to better yourself, which gives you immensely greater long-term benefits. The downside of that is you're going to need to put in a lot more work to see them. You won't find advice like "just smile" in "7 habits".