TORONTO (Reuters) – Canadian auto sales dropped a moderate 3.3 percent in February in a third straight monthly decline, according to industry data released on Friday, as a hardy appetite for Detroit's Big Three brands helped offset a setback for Japanese makers. Chrysler Canada was the top seller last month, pipping Ford of Canada by a few hundred units, although Ford posted a higher overall sales increase at 5 percent, compared with Chrysler's 2 percent. Carlos Gomes, an auto sector analyst at Scotiabank, said severe winter weather in part may have been responsible for the overall weakness. …