User blog comment:Wolf night10/The Final Getsuga Tenshou/@comment-2136394-20100620171110/@comment-2186265-20111020184807

No Gestsuga Tensho is Ichigo's Zangestu special ability. All Zanpakuto have their own unique special abillity and while it isn't unusual for their abiltes to be similar it is weird if one shares the SAME ability ( also the reason Ichigo's inner hollow can use it is because he is a part of zangestu and like Ichigo can use the same abilites as shown by the fact that both of them could use  the same shikai and Bankia).