Am I getting screwed over?

I'll keep it short. Met a guy whose got an AI startup. I'm building an infrastructure/devtools company. I'm solo, he's got a team. We both think there's a lot of potential in joining our niches and targeting an AI infra vertical. So far so good. Now, regarding the equity split, he wants 70:30 (his way). The reasons? He claims has more startup experience, business experience and has raised money previously (public funding, mind you) and a team. He also used the word "strategy" a lot. He thinks I lack the experience (YoE) and that I give him "individual contributor vibes". I, obviously, don't think this is fair given that I will put an equal effort into building the company: I'll handle all the tech, have unique insight in the market we're targeting, know our customer profile and have the vision for the product. I may not have the years of experience but I have proven expertise in the problem domain. I've talked to customers, done "business things", done my fair share of VC meetings. So, am I getting screwed over as "the tech guy"?