Well, the canon status of MK comics isn't straightforward. It might be canon within certain story arcs or universes, but not across the board. Different interpretations and continuities can come into play.
Quan Guanqing and Quan Guanqing were the same person. Quan Guanqing was a character in Jin Yong's novel," The Eight Demigods." He was a member of Beggar's Sect. He had once tried to raise his status in the sect by exposing Qiao Feng's identity. Quan Guanqing launched a coup in Beggar's Sect, forcing the Sect Leader Qiao Feng away and trying to kill him. However, Quan Guanqing was eventually killed by his brothers in Beggar's Sect. Therefore, Quan Guanqing and Quan Guanqing were the same person, but they might have different spellings in different documents.
The length of the MK9 story varies depending on how quickly you progress and explore all the elements. But on average, it can take several hours to complete the main storyline.
Well, the duration of the MK11 story depends on your playing style and how much you explore. Generally, it could take anywhere from 8 to 10 hours to finish the main storylines.
The MK1 story's length isn't fixed. It could be short and concise or drawn out with elaborate subplots. It all comes down to the author's style and the complexity of the narrative.