You’re not going to be able to get anywhere as accurate to a Peterson tuner on the QC. The only reason Peterson offsets work so well is because of how accurate strobe tuners can be, which is 1/1000th of a semitone vs 1/100th of most other tuners.
The strobing is analog, even on units like the Peterson Strobostomp HD, it’s just represented on a digital display.
It the unit strobes at the frequency of the note it’s set to (A440 for example) and the note played into it strobes at its frequency (440.25 for example) that .25 cent difference is the strobe that is seen on screen. It’s so accurate because it’s instant, analog and physics based.
The tuner in the QC and any non-strobe tuner will need to analyze that note in a digital domain, which takes time, and reduces the accuracy.