Where does Cal say he tried Rossi's settings at Barcelona? He makes reference to the setting Rossi is using now and said that it is similar to what he tried in Barcelona. Also in Barcelona, Lorenzo tried a new fuel tank he had asked for but Rossi didn't.
Rossi and Lorenzo were both given a new fuel tank in Aragon to try. Don't know if this was another one or the Barcelona one.
Cal wasn't given one. At present, Lorenzo and Rossi are using a different fuel tank from Cal. Whatever the evolution of the Yamaha frame, Lorenzo asked for a new fuel tank to aid weight distribution. Yamaha obviously thought it was a viable option because they gave him one. Now they both have one. It must make a difference otherwise why bother.
Jarvis said the Tech3 bike is virtually a factory bike, not that it is identical to the factory bike. That means it isn't the same. Jarvis' own words, nothing to do with me choosing what to believe.
The clutch - when Lorenzo beat Pedrosa off the line in Catalunya, one of the reasons given was that he had a new clutch, specifically to help him combat Pedrosa's fast starts. They said only Lorenzo had it.
There is every chance that the factory bike has a better electronics package than Cal's bike and that could include launch control. I don't know, you don't know.
Rossi now has a new fuel tank and goes immediately quicker at the start of a race. You never know Benny, there may just be something in what Cal says.