And Aubameyang added: "I think the team did very well and we are all happy".
Arsenal manager Arsene Wenger is anxious by an apparent dip in attendance at the Emirates stadium in recent weeks but said he is confident the team will do "absolutely everything" to win back their fans.
Despite an official attendance of 59,131, there were empty seats all around the Emirates with a number of season-ticket holders seemingly put off by the Gunners' disappointing league season.
"When you have a run of negative results and it carried on from the Ostersund game at home and in the league". "I didn't play a lot in January so it was hard to find the rhythm", he said. "The first 18 games with nine clean sheets got me to 199 but then the last 11 games was sometimes frustrating but the most important thing is to win and so it was defeats that was more frustrating".
After losing to Tottenham Hostpur, Mancester City and Brighton & Hove Albion, Arsenal got back on track with a 2-0 win over Milan in the first leg of the Europa League round of 16, and it maintained its momentum against Watford on Sunday, reports Efe.
That was, however, Cech's first penalty save since February 2011, when he was still playing for Chelsea, where he earned 162 of his now 200 clean sheets.
The Europa League absences along with the Bundesliga's winter break meant that Aubameyang only played once in January, but regular Premier League appearances have made life easier. But overall the spirit and desire was good. And they're [rules] a bit ....not maybe stupid but something like that. "Both teams created many chances".
The Gabon striker is ineligible for Thursday's AC Milan clash at the Emirates Stadium due to his European involvement with former club Dortmund earlier this season.
Watford play in the Premier League next Saturday with a trip to Liverpool (17:30 GMT).