The space battles and lightsaber duels are in 8 for sure, but the more interesting training and luke things happen in 7. So, if the bang boom stuff is what makes a great star wars film for you then I can see that it may seem that 7 is inferior, honestly I think 7 would be the stronger film and 8 would be stronger than what we currently have for 8 too.

Also, to the notion that the ending of 7 would not have enough oomph. I am not so certain. Yoda and burning the tree and so on, this could be pretty dramatic. It also opens up the possibility of a year between movies. It offers the potential to have Rey training during this time to show she earned her mastery and expertise, prior to them meeting on the surface of Starkiller base. Conceptually I really like that.