What happened was that Cook was asked by an audience member about the possibility of adding support in iCloud for other platforms. Cook responded by saying "We have no religious issue with doing that. If we thought it made sense to do that we would do it." This is far from admission that it will happen, but at least it isn't a complete denial either.
Of course, we would be surprised to see Apple port anything to Android other than maybe iTunes. On a long enough timeline, maybe Safari would come to Android as well, but we're certainly not going to hold our breath.