Mugello, not Misano... Misano is a different track located just outside of San Marino...
Your argument seems to be an emotional with just enough "facts" to make it sound reasonable, kind of like when evangelical Christians try to use "science" to disprove real science...
Rossi couldn't do anything?
Well you are right, he did run wide several times with his attacks on Turn 1, but he was able to get back on Jorge's rear wheel in less than half a lap, each time. Each time Valentino would miss turn one, he would streak away from Marquez and stick to Lorenzo...
Could he have gotten past Lorenzo? He was certainly close enough to if he at many points, but seemed content to attempt turn 1 multiple times and ways. While Lorenzo seemed to loose ground to Valentino in every sector during the race, he did an AMAZING job on the brakes into turn one.
However, there were 14 more laps to go, and Valentino constantly showed better pace through all sections of the track during the race.
Would Valentino have won? Don't know, but given that he showed better pace in every section of the race on Sunday and he has historically won the majority (all?) of his duels with Lorenzo, I think it is foolish to suggest he didn't have at least a 50/50 chance.