Destiny has four weapons, they just don't count the melee ones. Also, Destiny doesn't require you to pay money or wait three days to get new weapons/armor. Also, an open world will make Destiny much better than Warframe, especially since I often get lost on Warframe's levels because there's only one way you're supposed to go. Also, Destiny's enemies will most likely have vastly superior AI. And there will be a higher level of weapon/gear customization in Destiny. And the lore will make more sense. And you get vehicles to drive around. And you most likely won't have to look at loading screens all the time. and it won't be third person. And you get grenades.