Halo 4 is my favorite Halo game. They really showed what the Xbox 360 could do. The prologue made my brother and his friend think they where real people for the first minute or two. The epilogue has the best CGI I have ever seen. The campaign was amazing. MP was improved from Reach. Especially assassinations. All in all one of my favorite 360 games. The only gripe I have is the SAW in MM, too over powered.
Never actually seen TitanFall gameplay for the 360. Destiny will for sure show the power of the last gen consoles. I don't have and HDTV, so when my brother brought his once. I was blown away even more.
I was interested in it, until I found out it requires Gold 24/7 to play. I don't always have Gold. Main reason I'm getting Destiny for ps3. But back to the main topic. Halo 4 added some really good & cool features. The fact that there is 4 forge maps is a huge plus, they may not be as fun to forge on like Forge World, but 4 different maps really helps for variety.