Then your option is just flat out wrong in any objective sense of the word. The only diapers m3 beats for absorbency are the crap they sell in big chain drugstores.
Methodology: Nearly all ABDL diapers and several medical diapers from premium brands commonly available in the United States in size medium in January 2020 for no more than ~$3.50/diaper were purchased at various points over the previous 2 years to create and further build a panel for testing...
www.adisc.org
Scroll down to results graph. Notice where m4s are? And that's a plastic backed m4 from before they reduced the quality. Even if we claim an m3 has the same performance as an m4 (which is a huge if, considering that the clothlike m3s are even worse than plastic m4s by a significant margin), you're still talking about the bottom 1/3rd of performers.