If Diana becomes Wonder Woman and is named the greatest Amazon through the Tournament of Wonder, and the woman she beats is the second greatest, ..where does that leave the ranking of Wonder Girl? Seeing as how she never competed in the Tournament, she can't be Woman second to Wondy, because she never faced Diana's final opponent, ..Mala or Artemis, depending on the text.
Theoretically, Artemis should be able to kick her , ..as should a bunch of other Amazons, who came the closest to winning the Tournament.
Honestly, I find it a little weird that nobody on that island has ever brought it up? "This chica never competed in the Tournament, and she gets to be Wonder Girl? Oh, ..Hades..no. Who does this heifer think she is?" That's got to be a sore spot for somebody, right?
Was this ever really explained? If so, I missed it and bear with me.
If she's just 'Wondy's Little Helper' - if that's how the Amazons think of her - her skill and power level, should be irrelevant.