I can guaranty you that Rossi doesn't feel as much pressure as that, first he enjoy his riding, then he is making progresses and don't think realistically that he can get to Marquez just yet.
What he can do though, is to keep working at it, developing the M1 chassis to get it where he wants and since he is in front of Lorenzo, he has an increasingly high support behind him from Yamaha Racing.
Yamaha knows what he is capable of doing for them in terms of development, they've seen him at work in 2004, if they don't expect him to win the title, they know that he is preparing the way for the next generation such as Smith, and the brother Espargaro.
Lorenzo knows this as well and if he can't adapt to this situation or/and the tyres, he will be on his way out sooner than later, he already indicated that he had his own agenda when talking to Honda in 2012.
Yamaha doesn't pay him to get glory and fame but titles, same for the satellite bikes, they need a bike everyone can score high with, last year, they lost both titles to Honda.
Not good enough.