I think that Lorenzo era is gone now,he came as the giant to beat Rossi and company in his beginnings and the Lorenzo's land flags proved that he had the ability to do so.Unfortunately after Simoncelli death he is not the same as he was truly shocked by Simoncelli death and his performance has come in going down.The only one who can beat Marquez is Dovizioso but he is not constant in his driving style.
I don't really think Simoncelli death is the cause. On top of that, Lorenzo is not that 'emotional' and I doubt any rider would drop their performance because they lost their teammate or rival.
Lorenzo is having a hard time adapting to his new motorbike and his fitness is probably not as good as the past few years. And this is why Rossi is really amazing because he can still be consistent even though not always win a race when he's already 40 years old or so.
If Lorenzo can be as fit as before, and he can find the best setting for his bike, he should be able to compete with the top 3 again.
