Right i've played a few rounds... Ok so its still early days... I dont think its so much in a way easier as its more predictable, you have so much information about your swing thats its so easy to fix what you are doing wrong, dont get me wrong when you start heavily modifying your shots its easy to stray outwith the line and send it in to the rough. Plays a lot smoother than TGC2 for me fully cracked up. Game feels a lot more polished and less "Indie". But other than that its pretty much more of the same then slightly tweeked.
So... Is it worth £45??? I dunno, its early days yet, will I get enjoyment and use out of the game to justify the price? yeah more than likely. Would I recommend others spend that? probably not, not unless you really want to play it an know you will get your monies worth. I think if pressed hard I would suggest waiting for prices to drop closer to the price of the originals, I'd feel a lot more comfortable about my purchase had it been £20-£25, dont get me worng I dont have buyers remorse or anything, but I just feel £45 is a bit steep for what you are getting over TGC2.
All in all, I think too much emphasis has been put on the official endorsement from PGA without sufficient change/additional features to make it an instabuy for owners of TGC2. Wait out for a sale!