In Kikuchi's paper Kolmogorov complexity and the second incompleteness theorem the Kolmogorov Complexity (KC) of $x$ is defined as
$$ K(x) = \mu e (\varphi_e(0) \simeq x) \, . $$
This seems to give exponentially larger outcomes then the more common (rough) definition of $K(x)$ as "the length of the smallest computer program running on some fixed universal TM that returns $x$". How does Kikuchi's definition match up with the usual KC definition? Is this a common alternative? Does any major result in KC change/not work under this new definition, or can we just move everything by an exponent and rely on its monotonicity?