Presentation Advice

I recently attended an event that had a captive audience of CTO types. I was able to present along with 5 other organizations. 4 of which were start ups. 

Coming from an established company we could rely on strong real world examples of success etc. which made the presentation easier to handle and focus on. 

Without fail, each startup presentation used the phrase "industry leading" or something similar. 

During the open Q/A, each start up was stumped by a question like "if you're the industry or market leader, why haven't we heard of you?" Or, even worse "how are you the leader in a space that's owned by (insert enormous well known company that has a near monopoly on this process or service). This question more or less destroyed any momentum and mojo the presenters happened. 

My main takeaway was to stay away from lofty, unproven statements in presentations like this. 

Small moment to learn from and thought I'd pass this experience on.