One of the biggest differences between HubSpot vs. Pardot is that HubSpot is a complete Marketing Platform, whereas Pardot focuses mainly on marketing automation such as email drip campaigns and lead scoring. HubSpot also has marketing automation, lead scoring, and a robust Salesforce integration, but they also have many top and middle-of-the-funnel tools that Pardot does not.
HubSpot has everything a modern marketer needs to do marketing right, in an all-in-one, easy-to-use product. HubSpot's platform includes tools for Search Engine Optimization (SEO), Content Management System (CMS), blogging, social media, email, automated workflows, landing pages, lead intelligence, and analytics for each and every tool, to help marketers make smarter decisions to help their businesses grow. You can see the full list of HubSpot products here.
Tools aside, one of the most stark differences in the experience of a HubSpot vs. a Pardot customer is the level of education, training, and support you’ll receive.
You should make your comparison and decision based on the goals of your organization and your buyer personas. We obviously are partial to HubSpot because we're an agency partner, but we've also tried, tested, and ended our relationship with several other popular and trendy marketing automation platforms.