Honestly IDK why they didn't follow a bit of details on the Novel
For example the Pressure and killing intent that he showed on that body guard of lee min soo or whatever ,
also he showed a bit more cautiousness in the novel here no one knows about the time when he was being evaluated he didn't summon main elite knights, igris, or fang during the evaluation because he doesn't want them to know all his abilities and just in case someone there might be his enemies soon and that he would have his Elite knights as a trump card against them
ALSO HOW DOES Baek Yoon-Ho not recognize the A Rank newbie that he lost and now is Jin- Woo's Knight
I know it's a few minor details but it shows that Jin-woo is always on guard against whatever happens and to show how smart and cautious Jin-woo is.