I don't think there's a straight answer to the question of the topic, because every buyer had different reasons to buy one console or the other.
In terms of exclusives (and this is a really subjective topic, so IMHO), I feel both party has done a great job. I think we should be talking about launch window, rather than the actual launch lineup. Microsoft's main strength always was the aggressive approach. Get good, quality exclusives from 1st and 3rd party at the start at the generation.
Forza 5 was a given, a quality racer and a true showstopper. That's their mid-level franchise saleswise, because we all know, nobody will blow the biggest ace at launch.
Dead Rising 3 could be called a "moneyhat", but this game never would've been made, if MS doesn't pay for it. A good open wold action game.
Ryse was (we all know that) a failed kinect game (which says more about Crytek, then the kinect actually) and then converted to a X1 launch title. Given the circumstances I feel the mediocre gameplay is a fault of that design decision, but a truly great looking title, a new IP, and a possible way to race against God of War (no offense).
And Killer Instinct is a good F2P launch title, that everybody has as soon as they get a console, without the need of bundled game.
And they released LocoCycle, Crimson Dragon, Zoo Tycoon, Fighter Within, Powerstar Golf and in a month Max:CotB, Halo:SA, Peggle 2! Altough some of those games are bad, there is a great variety there.
In the launch window they will have (one of 2014s most anticipated title) TitanFall and Garden Warfare. They have the CoD and BF4 DLCs sooner.
That's a friggin' good offering for the first 6 months. I think they did a wonderful job.
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In comparison Sony did almost the same, but with their more passive approach, where everything should be 1st party, or if it's done by a 3rd party, it should/will be a Sony IP:
They released a game from proven franchise, with mid-level sales (much like Forza): Killzone - Shadow Fall. Killzone is a 10 year old franchise, so rebooting was a good choice which could make it bigger seller, and being a launch title gives it enough light to shine.
They released a new IP with Knack. It was Mark Cerny's game, who wanted to make a game for the children, which is an excellent choice, but being the main hardware designer, and being the game director right before launch was a bad decision, and it come down to mediocre gameplay. It had a fair share of development problems, much like Ryse.
They're making DriveClub as their F2P game, similarly to KI form MS, but with a different business modell, where a PS+ Edition will be given out for free. I think the fact that Evolution wasn't ready for launch was a mistake, because they didn't "bundle" a single AAA game with the PS4. Luckly they didn't needed to.
And Infamous: Second Son is an open world, action adventure title, from a proven mid-seller franchise. Ring any bells? Yeah it's their Dead Rising 3 basicly.
Sony has a lot of F2P/PS+ title such as Warframe, Blacklight, DCUO, War Thunder, Contrast, Don't Starve, Playroom and Resogun, to fill the gaps and make variety.
They have the exclusive DLCs for ACIV and Watch Dogs, and exclusive beta for Destiny, FFXIV and Deep Down. And I'm sure MLB: The Show is coming.
That's a friggin' good offering for the first 6 months too! I think they did an excellent job, and the delay with DriveClub and Watch Dogs only played out for the better for them, thanks to their excellent job in all 2013 in terms of PS4 PR. They didn't need that game now, and they can use it before E3, around April or May to keep momentum going.
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I feel Microsoft offering is a bit better for my taste, I'm a sucker for Ancient Rome, I love zombie games, and I usually don't like FPS games, yet I bought a PS4. Why?
Not because of PR. No.
Not because of pricepoint, I've bought to biggest memory card available for Vita a few years ago. So not that.
I bought a PS4, because of my personal experience.
Out of all those games, only one was made by an MS 1st party studio: Forza 5
Dead Rising 4 could be a multiplatform game again from Capcom.
I'm not sure who owns the Ryse IP, and Crytek would make another one.
Killer Instinct could get 8 characters, and that's it.
MS 1st party only has Halo now.
Nobody knows Epic will or not make a new Gears of War, and will it be exclusive.
Nobody knows Lionhead is making a traditional Fable game, or some multiplayer nonsense.
I don't care for a new Forza Horizon game, we just get Forza 5.
Black Tusk is an unproven studio, with an unproven new IP.
That's what concerns me. MS will still have Quantum Break and Sunset Overdrive, which looks great, but Alan Wake came to PC, and Insomniac could be hit or miss.
PS4 will have new Naughty Dog, Santa Monica, Guerilla, Japan Studio, Sucker Punch, Media Molecule, Evolution, Quantic Dream and Polyphony game. It could be Uncharted, God of War, GT7, LBP or anything else, the games won't stop coming, and the new IPs won't stop coming. That's what reassures me, and that's why I feel most people think PS4 is the better choice, especially for early adopters.