There's a misconception about what Arsenal needs. Arsenal doesn't need a "top striker". In fact, right now, most teams have evolved beyond a "top striker.

Arsenal needs another forward to compliment our young forwards that can match their intensity and push the team to the next level.

jesus isn't just a shiny new toy, he's actually the player that Arsenal needs based on his numerous qualities including pace, ability to press, big lungs and finishing, amongst other traits.