We did the two-fisted cookie challenge, taking bites from a TJ cookie and one of the two Delta Lotus Biscoff cookies that a friend thoughtfully saved for me from a flight she was on. The TJ version might be just a tiny bit sweeter, but the taste is almost identical. The TJ cookies are slightly smaller, measuring approximately 3 inches. I ate the Delta cookie before I thought of measuring it.
Above are the Lotus Biscoff cookies that I bought from amazon.com a few months ago (eaten up long ago of course -- see Delta Cookies -- Hard to find on Delta flights). As it happens, amazon.com now sells two kinds of Biscoff cookies, one from Lotus and another from "Gourmet Center" and the cost of the Lotus original has nearly doubled since I bought them. Lucky thing I can now get Trader Joe's Bistro Biscuits!