There were quite a few Democrats who won big in legislative special elections that didn't really harp on the size of their win. You win for the people and an agenda not personal bragging rights. That aside, Maxine Waters is a lot different than Ocasio-Cortez in terms of work style and I doubt the two will get along in Congress because Waters is probably too "centrist" for Ocasio-Cortez. The only person she is like in Congress is Sanders and that is it.
Even Bernie Sanders is to the right of Ocasio-Cortez.
