Her Power Level during the 23rd World Martial Tournament is 130.[6][19] According to Dragon Ball Z: The Anime Adventure Game, her power during the Saiyan Saga is 300.
Ch-Chi was stated to be 300 during the saiyan saga then her power level slowly started to diminish to 130-136 over the course of the rest of the series
all this proves is that vegeta was caught off guard by hit time skip if he figured it out like goku then he could won and why did goku need to go SSB after figuring out hit time skip conclusion he couldn't win without it and thus he knew he couldn't beat hit despite being in his base form