The Canaries shook current champions Manchester City with a confidence-boosting 3-2 last time out at Carrow Road.
Cork said: “All the teams that came up this season have looked quite sharp and lively and Norwich don't look out of place at all in the Premier League.
“They have started really well, scoring goals and playing good football, so It'll be a really tough game."
The East Anglian outfit's star man so far has been Finnish striker Teemu Pukki.
Cork also told the club's website: “He's obviously a great finisher. We've got to look to limit his chances and in the Premier League, you can't allow anyone time and space."