It is much sadder than that if you use Asuna's stats as the truth of this game. This is her stat at the beginning of Part 1 which means this is before she interacted with Inoda.
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This means she only had sex with Kirito 5 times and only orgasmed twice. It could have happened during one of the 20 times she masterbated. So yeah even before Inoda she did not have much a happy sex life.
Now it gets does get slightly better. In the beginning of Part 2 before Kirito unlocks her true stats in the shrine is this:
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I assuming this is her stats with Kirito alone. No Inoda and Oberon. This means they had a lot more sex and she had a lot more orgasms. But it also means they never kissed again. It is also kinda fun their sexual journey together. Besides kissing and HJ once in a while, all they do is sex, no other activities. Since I think we only saw Kirito and Asuna had sex once or twice in Part 1, I assume all the sex they had was after Lustiful Night. I wonder if Asuna was trying to overwrite that event with Kirito?
Numbers are fun!