Board Thread:Naruto Discussions/@comment-1512913-20170609150729/@comment-734582-20170610075155

The answer is simply that Hashirama has a number of very potent genetic abilities, including massive reserves, nature energy compatibility, strong healing, strong lifeforce, and biological compatibility with everyone (though few can withstand the lifeforce part).

Any of these individual abilities would make those cells worth a lot, but their combined abilities synergize a LOT. Just look at how Yamato uses it, someone who has Hashirama's abilities in far less extreme form. He doesn't have godlike chakra, godlike healing or Sage Mode.

As in Naruto's case, i think that Kurama already provides most of the power hashirama got (Sans wood release), so it's not as noticeable. Hashirama heals so fast due to high chakra levels and cell control (emulated by the Strength of a Hundred seal), but Kurama already gives that power. What we've seen of Naruto's cells is comparable to Hashirama's cells. The thing is, we don't know what Kurama's chakra did to him. For all we know, Ashura's power doesn't manifest properly because Kurama's chakra already expresses that power. Imagine a car that runs on a diesel engine for propulsion, versus a turbine or gasoline engine. Similar purpose, similar effects, but the machinery is different. And if there's already an engine under the bonnet, you can't fit another and different one in there, nor can you take the existing engine and modify it to be half-turbine, half combustion engine.