In an interesting interview with MCV, which we highly recommend to check out, the boss of the UK branch of Sony Computer Entertainment, Fergal Gara admitted that the highly acclaimed PS4 exclusive Bloodborne, exceeded their expectations in terms of sales.
"It did surprise us, we had expectations to do well. We looked at the Souls series as a frame of reference, and we thought we could do better than that. We did – and then some. Relative to some of our sister territories, we were being quite ambitious, but even that proved to be conservative."
"I think Bloodborne might have just landed just at the right time; it was a relatively quiet time, it was a very high quality title and a great platform differentiator for us. We were caught a little bit behind in terms of the volume, but we were able to chase it and maximise its potential."
http://gearnuke.com/bloodborne-sales-success-took-sony-surprise/