I did a data request and then it took a while to receive my data, so I used power delete suite delete in case the API stopped working. Rewrote and deleted my comments.
In my file there was comments overwritten with the writing I had put in before it got deleted. It was gone but present in the data export. So seems it was at that time the data back up was done they were not deleted, but what was rewritten was present.
There were also comments and submissions that didn't get deleted by power delete suite even though I can't see them in my profile. So those I have to go through manually using the csv file to delete them. Trying to get shreddit working to automate that process.