I tend to believe that the food at the international IKEA establishments is more appealing adjusted to the local taste than in the Swedish stores. For example, in Spain, they had "swedish-spanish" tapas which was quite tasty.
In Sweden, it's mainly the usual factorymade meatballs and badly cooked potato. But the prices are rock-bottom.
When at IKEA, i usually go for the wiener hot dogs and a slice of "pan pizza". It's difficult for them to get that wrong, and it's only about 25 SEK in total.