I visited the stall at Mercado La Paloma last year, and also could not understand the level of praise Mo-chica was receiving. I am Peruvian, grew up in Lima, and know my way around the Lima restaurant scene. Mo-chica was nowhere near any of the better restaurants in Lima; it could never compete with the most acclaimed ones. The only explanation I can find is that it introduced Angelenos to Peruvian fusion food, in the case of Picca and now the new Mo-chica, in a sophisticated setting (most Peruvian restaurants in the US are rustic and serve traditional "criollo" food). I should note I have visited Picca, but not the new location of Mo-chica (but based on my previous experience, I do not plan to).