what is hashgraph ?? Why should we care about it ??

Because it has the power to disrupt ETH, EOS, Cardano etc,
Learn about it:

Could you link me to an article comparing EOS to HederaHash? It feels Hedara using similar tech of IOTA + BFT that doesn't look like a big deal to me. The governance ideation is great but it looks nothing compared to EOS future planing.

Hi there, I don't know of a resource that directly compares Hashgraph and EOS, but I can tell you that Hashgraph has already partnered with several companies that intend to implement their technology
Here's a good interview with the creator of Hashgraph:

From there you can make your own mind :)

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