Kenzo is only one of three ramen spots that I've tried and is in third place. The other two are Isshin and Kinton which are nearby and competing for my attention.
It wasn't very busy when I went there on my own, and had a subdued and relatively quiet atmosphere compared to the other two spots which were incredibly busy and had an urgency to them. Maybe I was there between rushes though.
In fact Kenzo felt more like a nice family diner even though it had all the right ingredients to be a contender in the ramen wars we are all a part of.
Maybe the frenzied atmosphere is what helps make the ramen taste so good. For example, reading the tips and tricks section at Isshin they mention that you should finish your bowl of ramen in 8 minutes for maximum enjoyment of the ingredients. Take any longer and it goes downhill from there.
I had the cold sake for a side to the soup, but I didn't notice a beer swilling haze happening while I was there which seems to be a part of the ritual of enjoying a hot bowl of salty sublime broth and crispy pieces of tender chicken or nibbling edamame.
All this seems to take away from the flavour. Maybe if I was blindfolded or did a double blind test the results would be different.