I think Nico is doing a great job and Lewis knows he has a fight on his hands. However to say Lewis hasn't got the edge at this point is to deny the facts. This weekend could be a crucial race, if Lewis wins again, Rosberg is in trouble. If Nico wins he'll gain momentum. If Lewis has another car issue , Nico is right back in there. If Nico has a car issue, he's in more trouble. It's still very finely balanced. Lewis said in an interview recently that he's studying all the tracks where Nico was quicker last year and working particularly on improving his performance on those tracks, damage limitation he called it. Bahrain was one such track and Lewis did indeed half his quali defecit to Nico and go on to win. Spain is another such track, so that will be interesting.
Planning the season In that way does not sound to me like a driver who cannot concentrate for long, is over emotional, tense, fragile, not cerebral etc etc. it sounds like someone very determined and with a marked strategy to succeed. Sure Lewis shows his emotions, doesn't mean it stops him thinking or driving.