2015 has been a fairly mediocre year for exclusives on either platform. This isn't a knock on either platform by any means; it may just be a better reflection of what can realistically be expected of any platform.

Libraries are founded on third party support and cross platform titles. It's what allows consumers to play on the platform of their choice as opposed to having to buy a different console for a handful of titles on any given one.

Legitimate exclusives, (I'm going to outright toss out any timed exclusives here, which is one of the more aggravating trends introduced in the last generation) owned by the publishing hardware platform can greatly enhance a platform's library, and in some cases (Nintendo) even be the foundation for a library based upon individual consumer preferences, but generally speaking, they do not make one platform better than the other. At best they make one platform more suited to a specific consumer than another.

The differences in quantity or perceived quality aren't so great as to make either the XBO or PS4 stand out over the other.

Personally, I'd give the slight lead to the PS4, but that's subjective, based upon my own preferences in games.

Since I remember having this discussion in here again yesterday, this is from the UK Xbox site, notice the logo on Fable Legends (also on PC)

http://www.xbox.com/en-GB/xbox-one/gaming?xr=shellnav

I notice more the lack of logo on Tomb Raider

And still some people think it wont come on PS4

Of course the outcome was predictable.

You pretty much got it now. It's being released on the PS4 later in the year.

Only a couple heavy hitters from both this year. Two big exlusives on xbox one this year. Ps4 has 2 big games (arguably 3 depending on how good deep down is). Sony also has a ton of interesting exclusive indies, such as the tomorrow children, no man's sky (not sure if we're calling this an indie or AAA anymore though tbh), and wild. given that I find halo and forza incredibly boring games, I'd say it's hands down the ps4 in my case, and I feel like xbox one can only be considered the winner if you REALLY like halo.

What are Sony's 2 big games?  Please do not say Persona 5 and Until Dawn. 

Until dawn (why wouldn't I say this?) and bloodborne. And arguably No man's sky, not sure where to put this at this point. 

So the old sources say the PS4 version is being delayd, but the new sources say it's on schedule for the same release date. Conflicting at best.

I have a feeling that they have upgraded their exclusive rights to full exclusive. To not label TR as an exclusive in any form could mean secret announcement at E3.