This may have been the anchor for many of them, so they try the others and think, hmm, this one wasn't as rich as the first one, or this one was way too rich compared to that first one.
そのため、他のものを試してみて、うーん、これは最初のものほどリッチじゃないな、とか、これは最初のものに比べてリッチすぎるな、と思うのだ。