I don't think it's temporary - the former #1 and #2 where probably websites that have a bazillion different content - while he has a specific website dedicated to just that one thing - and they have a website about everything, that also talks about his topic.
That's the same situation with me, I'm #4 currently and I'm giving my best to get to #1 - all it takes is hard work, backlinking with anchor texts and PATIENCE.
That's the same situation with me, I'm #4 currently and I'm giving my best to get to #1 - all it takes is hard work, backlinking with anchor texts and PATIENCE.