If the Holmes brothers were to become criminal masterminds, Sherlock would be the superior one.

You are welcome to use the Sherlock of any series and Mycroft of any series of Sherlock as you like but I will be basing the fundamental differences in the capabilities of the brothers based on what reviews of the books wrote.My opening argumentIn all series, Mycroft is the duller brother with little motivation to do anything at all but an inescapable aura of dominance that all seem to submit to. He has the higher IQ but less emotional resilience to pull through his ideas to the end and explain the reasoning for his conclusions to the masses. He is inferior to Sherlock in making actual friends but superior at superficially charming people and appearing 'normal' or conformist at the very least.He has disadvantages and advantages over Sherlock. In some series he is presented to work out and do exercise, even the books say so, but if he lazy why is this so? In my opinion, there is an underlying aspect to Mycroft that will fundamentally make him a superior criminal.He can learn languages in a matter of 2 hours and can literally change his entirety of persona and morals within the blink of an eye. Sherlock cannot do this nearly as well, he can physically make disguises better but the actual acting is something Mycroft is a God at. Mycroft is with the secret services and has oftentimes infiltrated opposing armies and other operations himself, working his way to the top. Whilst Sherlock will probably be able to do the same, the pace of his chameleon-ability is only half as good as Mycroft's.On top of this, when it comes to knowledge of actual law and how to deal with people of authority Mycroft has literally more expertise than any human being to ever exist. He knows every single aspect of how politics and human nature work and can deduce who to charm and who to make enemies within a work place within seconds of arriving there. Sherlock reads people, Mycroft reads groups of people. Mycroft is simply at a level that Sherlock cannot compete with.There are, nevertheless, aspects of Mycroft which my opponent will no doubt raise as disadvantages. Sherlock can completely divulge all self-respect to blend in, he can allows himself to be tainted, cut, tattooed, drugged and pretty much anything that will get him further into groups and then manipulate them with his wit, a level of wit superior to Mycroft and all other humans, and then use his social glib to make people literally die for him. He is more capable than Mycroft at creating cults and that sort of blind sheep mentality amongst people as he can create artificial constructs of logic with flaws that only he can see (he, in other words can convert people to Satanism and convince them that he himself is Satan in a way that Mycroft would never be able to) but Mycroft can work within the current religion and bend it to his advantage in ways Sherlock can't. Mycroft understands human nature much better and knows that instead of convincing the Christian that his religion is wrong, one merely has to convince him that serving you is worth ignoring his religion for; Sherlock has too much respect of people's beliefs and likes to play the 'game of deduction' for the sake of it and would go through extra efforts to get people on his side just to know he was capable of doing it.Sherlock would end up wasting most of his time making sure all his minions were doing what he wanted them to whereas Mycroft would leave them to fight amongst themselves and not care how things turned out as even if everyone grassed each other up, he'd find ways to end up on top. Sherlock would, instead, intentionally go to prison with them and work within prison to get revenge one them one by one because that's just his nature.