I got a chance to play BandFuse and 2014 back to back and gave them both a serious try. (I still don't have 2014, I'm more happy with 2012, YMMV). I played it enough to get get 5 stars on a song, 100 note streak, 100% a song on medium, and tried to be open minded about it.
My problem with BandFuse as compared to Rocksmith is that it emphasizes the picking hand instead of the fretting hand. Their notation is about the timing of things like bends, and the right strings to hit. The notation for the fret hand is possibly OK for people really into Tab, but I found it impossible to play something that I did not already know or understand. After a little while for example, a 1/3 notation on the top string is clearly a power chord, but when I was playing a new song, and I'd get a 2/4 on the A string, it would blow my mind.
With Rocksmith by contrast, I can know practically nothing about the song, and still be able to get my fret hand in position, because it's showing me exactly where to be. This is why I say Rocksmith emphasizes the fret hand, and I think that's the right emphasis. At least for me, I have waaay more trouble with where I am on the neck, and what string, than I do with picking.
So for me at least, I found BandFuse to be a nice novelty, but way to close to being a Rockband 4 with their awful notation. I even have that stupid plastic Mustang guitar, and could never get their notation, even after studying a song.
Now for 2014 vs. 2012, for anyone who might be curious: I like 2012 better because it's more 'fun'. The emphasis is different. 2014 is a more serious tool, and more polished and definitely better at actually learning a song. But I'm a dilettante, and don't actually care about all that, I just want to play music and have fun and learn as I have fun. 2012 meets that goal better for me, because I really enjoy playing to that stupid animated crowd. Dunno why.