I walked by last night and ran into the owner of the former Los Tres Potrillos. He was sitting inside the place. I asked him did he sell it. He replied that he just changed the name because he will be serving more "American and Italian" food. So it is the same management and probably the same cooks, but with different food being offered.
I liked Los Tres Potrillos, so I am going to be sure to try their new "American" menu.
*snark aside*: I just love how everything from the USA is referred to as "American" Canadians, and South Americans collectively : Do you hate the USA for stealing your identity as "Americans"?