TU Delft is statistically the best, but what does that provide?
Honestly, I wish there would be more focus on what that education provides. In areas like Rotterdam and Eindhoven, the relatively high standard of education on all levels turns them into regions with huge economies (especially Eindhoven in the past decades). The prestigious universities in those cities (TU Eindhoven and Erasmus) contribute a lot to that.
TU Delft is statistically a very prestigious university, but it really doesn't provide much to the local region nor the country as a whole. Sure, there are successful graduates, but the university lacks something. TU Eindhoven, University of Amsterdam and Erasmus all have connections with lower levels of education and companies which allow more smooth transitions for students of any level into higher education levels and into job fields.
It's that social infrastructure which in my eyes makes TU Eindhoven and Erasmus the most successful universities of the country. Because despite being weaker on traditional stats than TU Delft, they contribute more to the economies of their region and the country as a whole.
University of Amsterdam is relatively successful but the region as a whole gets so much funding that anything except major success would be a failure.