Not exactly what you asked, but might give you  an approximation if you treat the SL2 sensor performance as a rough proxy for the Q2….

https://www.reddotforum.com/content/2020/05/bw-iso-showdown-2020-leica-m10-monochrom-vs-m-monochrom-typ-246-vs-m10-p-vs-sl2/

And a more recent Q2 comparison, albeit without the M246…

https://www.reddotforum.com/content/2021/02/bw-iso-showdown-2021-leica-q2-monochrom-vs-m10-monochrom-vs-q2-vs-m10-r/

For me, the choice (besides the lens issues) would more relate to the RF vs EVF experience.  All of these cameras are very capable.  

Jeff