BigDTBone wrote:That was true in TSR D&D. In 3.5 and PF martial power actually increases quadratically as well. The martial hits harder because of stat gain and expected gear and hits more because of iteratives. It's a much shallower quadratic, but it is still a quadratic with a positive multiplier on the x^2 term.
It's quadratic because the options increase linearly (as does the martial) but the power of those options increase geometrically (while the power of martial options increase linearly.)
No, the martial options increase as the sum of two lines (the increase of options and the increase in power of those options) while casters power increases as the sum of a line (number of options) and a parabola (power of those options.)
Think about it like this, when is the last time you saw a feat that required +17 BAB, and really encapsulated the type of power a 17th level character should have, vs when is the last time you saw a 9th level spell? Now also keep in mind that if that imaginary feat were to exist that the martial would be stuck with it everyday even if it wasn't helpful in a particular mission. The caster an take their very real, published, and supported 9th level spell slot and fill it with any spell they choose.