everything in the world is inherently different, because they are literally different things. object A is not object B even if they are both cellphones, or whatever. there are things that tablet inherently has a slight advantage over mouse and likewise mouse over tablet given a certain person's skillset, albeit extremely hard to pinpoint exactly. that being said, everyone is also different and inherently has a different skillset, which can match tablet or mouse better. in a sense, it's just "preference" because it depends on which peripheral a person is more inclined to use given their skillsets. however, to say that something is better generally implies that it is better for the majority of people. something would not be "better" if it were disadvantageous to most people. therefore, because it is basically fact that most people see greater improvement with tablet, the general consensus would be that tablet is "better" than mouse, since the majority of people see an advantageous benefit from tablet. To say "you should probably switch to tablet to improve faster" is not misleading, but rather a general guideline; however, it should be taken with a grain of salt because you may be part of the minority. the world is just made up of statistics.
now begone