There are known to be races favoring cars like the Mercedes and races that favor cars like the RedBull. They go for different aerodynamics, at least. There are big differences between them in acceleration and breaking.
This race was favoring the Mercedes, hence it was somewhat easier for Valtteri. It doesn't really tell anything definitive about the cars. Also Max was complaining about steering issues, so he may not have been forcing the car as usual to avoid... an abandon maybe.
Monza still favoring ATauri also do you think? It would be really nice to see more different tracks or tracks altered a little more different every season also, just so cars cannot just gain competitive edge from years of practice. But it was nice to see Dutch track finally in use and of course, favoring the guy who practices it the most.
Well more tracks are being built for this. We recently heard the news of F1 races being held in Qatar. Also, there are a number of places where new tracks are being built. This will have a positive effect on two things -
1. F1 will expand to new areas and gain more followers and
2. New tracks mean a new challenge for all the teams and teams like Mercedes won't have the edge in that because of years of practice in it.