If you need to compare text files, you need a diff tool. Eg.
http://winmerge.org/ or even
http://www.diffnow.com/I wouldn't start with anyone else's config though, unless you know exactly what you're actually setting, and why. Your XML and motor A1/A2/SCAL numbers is all you need, besides the defaults. On M4 you'll need to change the Motor Arm/Min/Start PWM numbers from zero to match the ESC32 settings (or whatever you're using, unless it's CAN in which case those settings don't matter). That's all.
BTW you can load your Quatos XML directly into QGC mixer config. Saves a step.
-Max