Keep in mind the script was from a top-shelf writer who worked on it for ages. It's established earlier in the film that the crew think it's completely plausible a computer dating service would set the two of them up.

"...Fellas. Fellas, look at this man's trash. He's not looking for "buff." The man who folded this tube of Crest...is looking for someone...meticulous. Refined. Anal. ...What?"

I think Cosmo's comment - note he's extremely vain, how he dresses, his office is practically a modern art gallery, he's got the organization's Cray sitting on display, etc - just further shows how vain he is, thinking someone as attractive as Liz couldn't possibly be a good match for a nerd like Werner, when it's established that they're actually quite alike/compatible.

One could imagine that Liz also obeys all speed limits and comes to complete stops at every stop sign...