The Ivorian, starting his first Premier League game since December, gave the Gunners the lead after just 11 minutes at the Emirates Stadium before laying on two more for his team-mates.
The former Lille forward could have grabbed a hat-trick as Arsenal threatened to overrun the struggling Royals in the second half.
"He is what you want from a striker, dangerous, he scored and gave assists," Wenger told Sky Sports after the game.
"The only regret is that he had a few more chances to score, but you cannot fault his performance today, he was absolutely outstanding."
Speaking of the team's display in general, Wenger added: "It was a good performance. Technically sound, serious, always focused and a very creative performance as well because we created many shots and chances - that is what you want.
"We kept our focus and fortunately we scored early in the second half, that killed the game a little bit.
"Reading kept going but our technical quality today was very, very good. We also had a lot of imagination, sometimes a little bit too much but that is what you want from your team."
The win keeps up the pressure on north London rivals Tottenham in the race for a top four place, though Wenger insists he is not worrying about other teams' results at present.
"We are focused just on winning our games," he said. "We have a clear target, we don't need to look around us because at the moment we are still behind. We just want to win our games."