Exclusives matter to the system I am putting my first dollar towards because I already know third party systems will work and come. To me, sometimes there are third parties that are putting out thing I don't like, since they largely follow trends, and 1st parties break that wheel for me, so it's more of a plus on my gaming habits than a negative. Because of that, it is an importance that exclusives are in the mix.
When it comes to graphics, I don't necessarily pride myself making sure I need the best of the best. There has to be a symmetry for a decision like that. So I'll only do an upgrade like that if I play that system the most. Where my main library is the largest is what matters more to me than that. So for example, I started off the gen with a PS4 which had a higher fidelity than the XB1, despite buying that system for its first parties. It happened to be a win-win because the PS4 had that out the gate. But over time, since I dedicated all that money to the PS4, it's just in my best interest to not waste my money and buy a X1X just for graphics when I'd have to start all over. And on top of that, change everything just for a 2x bump that imo, isn't that much of a jump for the games I play, to spend what would be now, $300 extra dollars for. So instead i'm gonna make a smaller upgrade to the Pro, which cost a lot less for me ($50), and I don't have to deal with the burden of moving libraries but the 1.3X upgrade for smaller things was worth it for me.
So with how next gen is sounding, I know where I'm going next gen that isn't a surprise. However it doesn't stop me from being a multi-platform owner. I'm just not going to switch my entire history to start over. So there will always be a placement for each that I priorities over the other which pretty much everyone does.