From what I've seen, the core gunplay of Destiny isn't particularly unique. It honestly looks like the same generic ADS filled borefest that CoD, Battlefield and countless other modern shooters use.
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I was playing BL2 today and I had an electric handgun. As I was mowing down bandits and reloading I was reminded of the E3 gameplay demo when the warlock was using his revolver to send Fallen souls into the black...and I am okay with that.