you know if you just want to completely bastardize the definition of the word “technical” and restrict it to crossing only then fine. Robertson is a much better crosser of the ball but is worse at every single other aspect of touching a football.
If you expect him to contribute in the buildup phase of play you’re hugely mistaken and under RDZ that matters. Imagine a VdV Robbo left side building up, they’re both nervy left foot only players who like to run into space. Udogie’s level is up and down but his touch, his dribbling, his intricate passing and small spaces play is all closer to the RDZ style than overlap & cross Robbo.