Napoli were beaten 3-0 on aggregate.
But Giuntoli says: "In terms of performance, despite the fact Arsenal are a very strong team, we played positively.
“If we can use a boxing term, Arsenal would've lost on points over the two legs. It's scant consolation and we did have a psychological blowback from that elimination.
“We have to go forward, fortunately there is a very important match today and we have to focus."