Didn't phrase it well, I didn't mean the second part at age 22 just that he has scored more than Archer in the Prem on 4 occasions.
My overall point being that if the expectation is he will be an improvement on Adams, as you said "shouldn't be that difficult", then people will most likely be disappointed. I would be amazed if he manages to get the 10 goals we need from a striker this season - i'd imagine he will end up more like Armstrong when he first signed for us, getting 3/4 at most.