Which bike is "better" depends on the definition of "better". One bike does some things better than the other and vice-versa. It's all about fun to me now that I am pushing 49 years old. Horsepower, faster, blah, blah , blah....this comes down to the rider IMHO. To me, it's 80% rider / 20% bike at best. Look at the top riders for any motorcycle sport (motocross, road racing, etc), the bikes are all comparable, it's the rider that makes the difference. BTW, I own two BMW cars, just like the Yamaha bike better (value, reliable, and fun).
Peace