On the face of it I guess, unless you happen to be better under the pressure of competition then while practicing. Or if the judges only watch some skaters practice and make their judgements from there
The ISU though likes to pretend their judges are totally impartial and that judges and their decisions can't be questioned (I'm not even thinking of current events in Russia, this has happened for ages - I find it bizarre that in some sports questioning a legitimately wrong decision - like a goal or not in football - gets you a fine. What's that all about?)
Although if this is generally understood then the Japanese Figure Skating Fed are really shooting themselves in the foot! Or are they clinging to the forlorn hope that the international judges will follow their lead one day