Ivanovic is a FORMER world #1, but I am sure you have noticed she has not been PLAYING like she once was #1 ranked. And, I noticed that you added Sharapova in Wozniacki's list of opponents. EVERYONE on the tour is beating Sharapova. She has not been the same since coming back from the shoulder surgery; and she is being eliminated in the first round of most tournaments, possibly making it to the second round of some.
I am sure SOME will take Wozniacki seriously; they already are. I am not sure if it's because she over-took Serena in the rankings and the masses has dislike for Serena. HOWEVER, I am in that group that says until she BEATS a top 5 player and win a SLAM, to me she is just a paper ranked #1 player. You know, like Jankovic and Safina?
Have you noticed that the Top 5 players play sparingly; therefore any ranked player that plays decent tennis can gain the ranking of #1 if they play 24-28 TOURNAMENTS a year, competing against lower seeds. I'm not impressed. Beat Serena, beat Clijsters, beat Henin, then I will be impressed. Better yet, get past Zvonareva, which Wozniacki has failed to do.
BTW, she is the MOST celebrated player on the circuit gaining the #1 ranking. What's up with that?