Great piece of advice, so obvious in retrospect and at odds with many other pitch guidelines out there, that suggest you start with the management team / "company snapshot".
You start with your strongest suite. So, if you're an extremely early stage startup with a stellar team, you start with that. If, you're technology/traction/investment thesis is stronger, relative to your team, you start with that.
The first 60 seconds is key for any presentation (pitching investors or not). But even on a seed round, I wouldn't start with a team slide, unless it sends a powerful message of why this is a team of rockstars (but chances are, if this is the case, you wouldn't even need to talk about team upfront. Your reputation precedes you).
Open with the investment thesis -- or more specifically, lead with WHY this is a great investment compared to the other 100+ deals they're looking at.