As I am a content marketer, every day I have to fight to get top-ranked for my articles. So, SEO should be perfect. For my content side of SEO, MarketMuse is a lifesaver to me. It helps me to plan my content, get the score of my content, and the suggestion to optimize my articles. It saves my time and money too.
I think Substack is better for people who want to set up a personal-facing branded website vs people who just want to post random musings every so often. Monetization is better there than any other collective publishing platform as well as organic reach via email. Substack also allows you to build direct relationships with your readers via emails and own them 100% which is great long-term if you use it to pivot to another site or another form of writing/content creation. Substack would be less helpful for someone wanting to write as a part of a group, not individually, or someone who's unwilling to put their personal brand behind their content. It's less optimized for SEO (which other platforms allow you to do) and can be harder to curate content based on your interests (you really have to go in knowing what you want vs finding it on the fly).
Because it has a very high Domain Authority ranking relevant backlinks in a published article will help make my store more searchable.
Substack is very easy to work in. The toolset they provide may not be as extensive as other platforms but it is certainly enough to create a meaningful, interesting post.
Substack is very focused on creating a community of writers that support each other. They run an ongoing email campaign that reinforces their focus on building a community of writers.
The support I have received from all MarketMuse staff at each step of the process has been excellent. They are very friendly, quick to assist, and also provide really good training to teach you how to use their product. Additionally, their own blog is a wealth of information regarding different aspects of content marketing, from articles to video interviews.
MarketMuse is more cost-effective than BrightEdge and does more for writers and editors that are strictly focused on content. It keeps people in one system after their first draft. Writers and editors do not need to go into multiple tools to look things up manually, saving valuable time. This enables them to produce more content more quickly.
Medium is not so good for running newsletter. I find the mail that a user gets is very easily readable. Also as a creator it's very easy for me to track the analytics and monetise my blogs unlike Medium. Blogger is a very old technology. The kind of integrations and the support for Markdown / different media is very great in Substack.