I'm not telling anyone to treat these "leaks" as gospel. As with everything to do with PLA-watching, news should generally be taken with a grain of salt.
However, some things are fact. The presenter is a navy officer, and as such has official status, that is fact. He was speaking at a marine engineering institution, that is fact. This suggests that the contents of his speech would be in some way related to ship construction, which the catapults are a part of for the 002.
Finally, consider the fact that he gave an answer at all. If he does not know what catapults the 002 will use, then he would likely have not given an answer. If he knows but was not officially not allowed to say, then he would likely have not given an answer. If he did not know, it would have been easier to say "no comment" rather than put his job in jeopardy for leaking information. Hence, since he gave an answer straight to the point, it is not unreasonable to believe he is telling the truth.
That's why I stated very clearly in my other post that I'm not sure how trustworthy the news is, and that I will leave it to your own interpretation. I firmly believe that posting some evidence is better than not posting evidence at all!