There is a lot of advertising hype. I used to use the one rated 2nd but now have switched to the Vital Proteins brand mainly because I didn't like the other one as I could taste it a little in my coffee where as I can't taste the Vital Proteins brand in my coffee. Here's one reference that might be helpful if you are in the market for collagen.

The 8 Best Collagen Powders of 2021, According to a Dietitian: https://www.verywellhealth.com/best-collagen-powders-4682620