Spiderman is a full PS4 exclusive because the colaboration was between Marvel and Sony, and the latter then chose Insomniac to delevop the game. So yeah, it's not 1st party, but it's still an exclusive.
And why Sony with Gran Turismo, Uncharted, The Last of Us, Horizon, God of War, Spiderman, is not quite at Nintendo level???. We are not discusing historic sales or how things were 10 o 20 years ago, we are talking right now. Those games are 10m+ sellers or are going to be soon and Ghosts of Tsushima, Days Gone and even Death Stranding could probably be close to those numbers too. How many 10m+ sellers does Nintendo have??, Super Mario, Zelda, Mario Kart, Smash Bros and Pokemon, and after those, a level below, maybe Mario Party and Animal Crossing. I'm not saying Sony surpassed Nintendo, but it's very very close right now, so to me, it's a valid comparison.
Because I fully believe Nintendo will have numerous 20M+ sellers on the Switch. Also Nintendo rarely discounts their games while Sony relies heavily on discounts to reach those numbers.
Splatoon 2 will also sell 10M+ when all is said and done.
"The strong do what they can and the weak suffer what they must" - Thoukydides