Zouaoui is also a past victim of the regular changes, which come despite Esperance's dominance on the domestic circuit where they stand three points clear in the Tunisian league.
While Sharples took the plaudits for plundering the points with his four tries in the second half he himself was heaping praise on stand-off Nicky Robinson.
Sussex stand just five points behind the star-studded holders and the match down at Hove between the two teams on 30 July could arguably decide the destination of the title.