Having spent 5 years in Delhi and having eaten at almost all the famous places i can safely say that there is nothing that matches upto the culinary treat that Lucknow has to offer.
Chote Miyan & Oudhyana are far better than Karim & Bukhara.
For chats..eat once @ Neelkanth in Lko and you will never eat at Evergreen or any of the agrawal sweets.
Awadh Biryani Corner will make Khan Chacha look like a novice and Pandara road is a student's project when compared to Royal cafe
To top it all..all these comparisons are at half the price of Delhi.