I hope you're not serious. Tomic would win 6-0, 6-0 (6-0) in any tournament including Wimbledon, if he could just stay motivated enough to aim for bagels.
Do you really think so? Serena Williams could surely win games against just about any male tennis player. If she has a good serving game, then it's in her hands. 120+ serves onto the line are aces, whichever way you look at it. With any good first serves Williams could clearly gain an extremely favourable court position. Women's tennis is a long way behind mens, but the best player in the world can still win the majority of the points starting from an attackable mid court ball.
Williams is probably the best server in WTA history, so the argument doesn't generalise into 'women can compete with men', but having a good serve is a great leveller, and Williams serve + ground strokes are good enough to win her games (not just at Wimbeldon).