There are several tools that Xara Designer has that Affinity Designer does not. The Mould Tool is one of those tools.
This isn't to say that one program is better than the other. In fact, there are tools that Xara could adopt from Affinity as well. My goal here is to point out useful tools in one program that could be of benefit to the other program.
I hope that my new microphone is recording my voice a bit louder. It seems to be in my tests but if you are still having trouble hearing me please let me know.