So, as written and by the rough estimates provided in their respective sources gestalt effectively raises the challenge ratings of what players should face by anywhere from about 1 to 3 roughly. And the mythic rules indicate for every 2 mythic tiers a character has their effective level is 1 higher. in theory anywhere from 2-6 mythic tiers are equal to being Gestalt, again very roughly estimated.
This is the given written numerical theory behind these two similar but different options however it's generally the case that wizards and Paizo don't always have the best estimates of power and balance. So I ask you all, how do these variants really stack up? And as an added bonus what do you all think of a campaign where you could be either mythic or gestalt?
Assuming you get one mythic tier for every two character levels what would you rather be? And at what levels would that decision change?