Giroud's clever header in the 85th minute secured the points after Lacazette had taken just 94 seconds to make his mark with a header from Mohamed Elneny's curling cross, equalling the record for the fastest opening goal in a Premier League season.
That lead lasted only three minutes, however, with Shinji Okazaki heading Leicester back on level terms off poor Arsenal defending. Personally I think he is a hugely talented player, he's on the way up and he will continue to move up because the potential is there. "I rate him as a player, but we have similar types with Alex Iwobi, Jack Wilshere back, Mesut Ozil. we have plenty of the same type of players".
"But I don't want him to go and in the end he made a decision to stay and it was one of the days of recent weeks for me because I know how important he is".
Leicester City's triumph two years ago has shown us that any team with the right personnel, management and good luck against injuries, can challenge for and win the title; however, for this season I believe that the victor will come from a group of seven teams which I will tag as the contenders.
Wenger, who has plenty of attacking options in his squad, added: "It's a long time since we had so much quality". "Because Giroud is in his prime and is at the top of his game".
The France star scored 28 times in 31 games in Ligue 1 last season and left Lyon having scored 100 goals in 203 top-flight games.
Wenger remains concerned by his side's defensive frailties and insists it is something they must work on.
Mahrez did exactly that on 54 minutes from a corner after he himself challenged Cech's handling with a shot, and Vardy was again unchallenged as he rose easily to glance the ball in.
One thing is for sure: we are awaiting one of the best seasons, ever, in the history of European football.
Arsenal will be riding on their recent wins in the Community Shield and the FA Cup before that, against Premier League winners Chelsea.
"We have all the other players prepared in pre-season and they are all ready", said Wenger. "We kept the faith and kept believing in our game to push hard".
Little wonder the game was so open, but it did mean Arsenal were even livelier at the opposite end.
'Obviously for the neutral it would've been a great start, just watching it from the outside, ' the former Manchester United striker said.