Former Palace star Eze struck with an acrobatic effort for the only goal of the day.
Asked if this was reason why Arsenal signed the England attacker, Arteta said: "Yes, 100%. To strike the ball in the manner that he did it, very similar to where he did it last year, but against us when he scored from that corner, directly on the post.
"So he’s got the ability to do that, against a team that defends with that many bodies, so physical, don’t allow any space with nine defending your best player, you have to generate chaos or open space to generate big chances and he took the ball and the goal really well."
On how Eze handled the lead-up to the game, Arteta continued: "I didn’t see any difference. He’s always super relaxed before the game, always a big smile on his face. He’s desperate to play games, and I haven’t noticed anything different.
"It might be inside him, he was there a long time, he has such strong feelings and gratitude to Crystal Palace, and today was a very special game for him."
If Eze found the occasion easy, the manager added: "No it’s not, that’s what big players do and he’s certainly a big player. Hopefully that’s going to give him a big boost and confidence to generate many more moments like this, because these are the moments that sometimes define a season."