Great post, BigMike, and to be really clear, I'm not saying anything bad about Serena, she is one of the 2 or 3 best female players ever and she has had a truly remarkable career, plus of course you can only beat whoever is out there.
My point is more from a historical perspective, you get a lot of people who seem to just look at total Grand Slam titles, and while she did win 13 before 2010, her last 10 have come since 2012, in that post Henin/Clijsters era I mentioned above whereas Navratilova, like Federer, had to deal with other alltime greats her entire career (Evert, then Graf, and Seles emerged right at the end). Serena does get credit for dominance over Sharapova, but mostly the top players in recent years have imploded when getting near the top, it's been kind of amazing to watch but not in a good way.
My point is more from a historical perspective, you get a lot of people who seem to just look at total Grand Slam titles, and while she did win 13 before 2010, her last 10 have come since 2012, in that post Henin/Clijsters era I mentioned above whereas Navratilova, like Federer, had to deal with other alltime greats her entire career (Evert, then Graf, and Seles emerged right at the end). Serena does get credit for dominance over Sharapova, but mostly the top players in recent years have imploded when getting near the top, it's been kind of amazing to watch but not in a good way.