Most likely because they (along with myself) are well aware of Maulers PAC3 skills and how he has shown that he has the ability to be very creative with the editor and very responsible with it too. Although there aren't five examples listed, you can go to his previous PAC3 applications (Tier One and Tier Two) to see some of his older examples. Mauler has also proven to be very helpful to others when it comes to the PAC3 editor, and I recall back in March of 2018 where his assistance in helping me troubleshoot issues with my PACs is what helped me get my PAC Tier One application accepted, and I went on to use what Mauler taught me when creating PACs for my various characters and PAC3 Tier Two application. +1
To sum it up as long as he can show consistent activity on the server Mauler is trustworthy, creative and responsible enough to use the PAC3 editor.
PS. Apologies for any errors it's early morning and I'm running on 4 hours of sleep.