I can't say for Nintendo, they may very well have excellent support, as does Dell, but frequently I feel like the US get much better product support. In Europe the manufactures fight consumer laws and seem to do everything in their power to not offer the warranty that they are legally obligated to.
It may just be a case of "The grass is always greener", but it seems like the US have all sorts of excellent return, replace or repair options for electronics. Part of it may also be that it's much easier in the US. One language, easy shipping options (as in they can use the same shipping company for all customers), and the laws are more or less the same for the entire country.