I think the OP means the single main difference is "Python 3 makes it easier to develop high quality software." and gives three examples of this.

Which still doesn't make much sense. One thesis, "better software", three supporting arguments.

It's ok to be pedantic, but only if you're correct about the thing you're being pedantic about.

Just checking - you do understand that the person who submitted the link is not the person who wrote the article, right? Just thought I'd ask, because the wording of your comment seems to think otherwise.