It’s all bull sh**. With the same tires at the same pressure, same seat post, and same fit, you wouldn’t be able to tell the difference. A racy gravel bike and a touring would be the same bike. You don’t stiffen a gravel racing bike. Gravel races aren’t 40min crits.
Racy here just means lower stack, maybe a higher seat tube to position the top tube for CX use, less fancy features for weight savings, and marketing BS. Most of the challenge with an AL or CF frame is making it LESS stiff. Both “racing” and non-racing frames have overly stiff pedaling stiffness, will ride well, and can be set into the same fit.
Buy the one with the nicer paint.