Board Thread:Questions and Answers/@comment-118.211.8.204-20150302141811/@comment-3551173-20170319050704

Well revisiting this discussion, this was covered in some ways, if we go over the ifs, it is a long and harsh road.

If Kirito got life or death serious, we don;t know what would happen if Yuuki got life or death serious

What is established fact is that Kirito has a record of 0 - 2 against Yuuki. Yuuki has an impressive duel record as Zekken, and Kirito has been mentioned to duel only 3-5 (Kuradeel, Asuna [ME], Kayaba [duel and final battle], and a mentioned duel in the beta)with 1 loss and 1 gimmee times up until Mother's Rosario,  not counting BoB though.