Deliverability, price, pricing model, api/automation, UI, email builders, support, etc.
The article is just “why we chose breva” and is very specific to you. As far as I can tell you didnt even use half of the offerings since they were ruled out purely due to pricing models.
EDIT: just an example. If I wanted to know about sendgrid and how it compares, the only information this page gives me is “it has an overage charge”. How am I supposed to consume this article as an informative comparison?
This is not a universal comparison. This is the story about how I tried 25 email marketing tools. I’m sharing my subjective experience. You might be looking for something that my article doesn’t claim to offer.
What would you compare the tools on? Be specific