Hi Lula, I believe it can all be relatative.
I have seen it both ways (players with great strokes in training, but are not so good in match play, and UGLY looking in practice (to make you bet agaisnt them) they they murder you in a match.) and both outcomes vs different payers.
In 2017, my first year in California, I sometimes could make it to Bay Area to play on TT Monster's team for his club league. There was a lady there, who always practiced with the 2300+ crowd with fast exercises, hardly miss, real strong solid looking at the table strokes miss once every few hundred, play real quick real fast pace high quality drive shot. She played a match vs our ace 2200+ guy (who also has those great looking rally strokes at table) and that guy nearly lost, was behind 5-8 in the 5th before he pulled out the win. I played her and was a point away from winning her 3-0. I certainly cannot be accused of good looking pro-style practice stroke proficiency.
I have not seen either of these ladies in this vid in any matches vs players whose level I knew, so it is all a guess until we have some data. (EDIT: I had written DATE... like we wouldn't know until we date them???!!! Urrrgh.)
Having said that, Korean pro-trained high school lady athletes can be easily 2300-2400 USATT level, which is a level that can give Mens Open (Natl) Div 1 players big problems. That level would lose to you, Lula average 3-0, maybe occasionally 3-1, you are I think 3 levels better minimum. It doesn't take many ratings points to make a new level at the high level you play Lula.
I think if we stacked either lady up vs Dan, he might have his hands full, they are around Dan's level minimum, if they are (were) good HS players. We also do not know how long continuously they were trainng. In School, they hire an ex-pro to give Marines Boot Camp to them... usually sessions are a few hours and it is not light stuff... surprisingly mostly foundational basic stuff, not real exotic combinations, just working on fundamentals billions of reps.
You saw the level of Takku on some of the Korean Youtube vids... Either of these ladies would defeat Takkyu 3-1 or 3-0 each match.