^No. Sasuke probably won't ever have more fangirls than Itachi.
Kishimoto stated in an interview that Itachi had fangirls back when he was in Konoha, because he was apparently very popular. He probably lost them after his S-Rank mission and having to live in solitude for the remaining 7 years of his life though. :/ So only in the Naruverse does Sasuke beat Itachi in that regard.
But in real life, Itachi has more. That I know.
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