Quote (Vicc @ Dec 31 2010 04:16am)
not really.
Instead you should compare Gear second to Sage mode, except Sage mode can be compeltely mastered.
Sure, Luffy got used to it and can use it for longer periods of time, but I'm pretty sure overusing it WOULD shorten his life somewhat.
the problem with both of them is that they were not strong enough to use the ability w/o it damaging their body...
naruto got stronger, luffy got stronger.
why would they allow luffy to continue to use this ability unless they were infact planning on killing him in the end of the show?
hes been using the technique since cp9, yet there has been no sign of Luffy weakening.
u cant just say its going to shorten his life and expect to see signs of damage 20 years from now.
it would show up almost right away, yet here he is in the marines headquarters after two (so called life shortening) adrenaline shots and many extended uses of gear second.