As of late Chi seems to have taken a back seat to Danny. Skill wise I still think that they're about equal, however Danny has become far more formidable all things factored in.
Hell, Spider Island confirmed that he's not even mortal anymore when Shang was infected and Danny wasn't because he isn't mortal or some such. Also in Defenders he was shot in the sternum with an alien weapon and basically popped the bullet out of his chest with chi, healed himself and went on to kick some alien ass.