I have experience with the longer, narrower desk. I was making my argument based off of the experience I had with that one. I am not here to tell OP what to buy just simply here to give my opinion. From my experience I was unable to fit my PC on the desk I had as well as three monitors, your experience was clearly different because you had a different desk.
Your evidence clearly backs up your argument so you have all the right to push your opinion on @Agazed, but I will stand by my opinion.