Okay kids, lets break this down.
Nu vs. Hakumen. If Nu loses for any reason, this Nu is a horrible Nu. There is quite literally NO safe way for Hakumen to get close to her. She can literally run away, sit in a corner and wait for you to move. She has a perfect anti-air in the 2D with which to shoot you out of any IADs, and a plethora of horizontal moves to stuff any command dashes. You can't use his counter to actually counter any of Nu's projectiles, you'll be too far away so you'll get stuffed by a projectile every time. In this match, the Nu player can start by backdashing and throw out a gravity field and your not going to be able to touch her. Nu can stuff anything Hakumen does. At least Tager can sledge through stuff and spark bolt things.
Oh sure, you can beat a Nu player with Hakumen. If they're impatient. Anyone who's Nu who's playing seriously isn't going to lose. Hakumen players will lose because of balance issues. Please don't pretend balance issues don't exist in CT. There's a reason characters were completely changed in CS.
Some characters are hard to play. Some are not. Nu is not. Whats that basic combo? DD hold back DD, quarter circle D? And then an air one is something like 2D jDD DDDDDD.
Nu isn't hard to play. Litchi, Rachel, Arakune and Carl are hard to play. When people ask me what characters they should start with, I always tell them Nu or Noel because they're so focused around 1 button with minimal execution. I still remember being aghast at Nu's projectiles not being quarter circle Ds.
Another ungodly match-up is Carl vs Tager. Tager is royally screwed in almost all situations there because of how large and slow he is.
And as an aside, I find it hilarious that they made Hakumen's sword simply block things. As if it were some kind of better alternative to simply standing and blocking. One of many ideas that probably seemed good at the time, when they came up with it (clouds cursing when blocked). Hooray for black holes in CS!