id go with the first one too. leadership isnt just about managing people. it can entail when you:
identified/defined a problem
articulated vision
resisted conventional approaches; challenging status quo
convinced others of importance of problem
marshaled resources to address problem
motivated others
made good use of others' talents
was open to new information, input, etc.
built consensus with appropriate stakeholders
guided strong mid-course corrections; overcame mistakes
built on success
permanently upgraded organization’s capabilities; institutionalizing solution
illustrated methods for other individuals, organizations, etc.
(i got this from some adconsult site)
also, it is hard to substantiate the second one, whereas you have more solid facts to go on in the market entry example. i think it is definitely the more eye-catching and interesting one to use.