I just checked EoTVGS -- for roughly five years from 1978 to 1983, The Price Is Right, Family Feud, and Wheel of Fortune were 1-2-3.
However, there were only six game shows on daytime overall when Chuck was axed--the three mentioned above, plus Blockbusters, Battlestars, and Password Plus, and those three were obviously pretty weak. And considering Family Feud aired at 12 noon, finishing ahead of Wheel didn't look good either.