Yes Honda makes great stuff but they don't have the broad spectrum that Yamaha has.
Honda makes lots of things with engines so they generally stick to things in that one field. Cars, lawnmowers, ATVs, motorcycles, someone said jet(!?), wicked snowblower. Almost everything that they make is of excellent quality.
Yamaha does the motorcycles, snowmobiles, ATVs, someone said stereo equipment of which I have owned some ( those Natural Sound amplifiers are great), their monitors which someone also mentioned (I have a pair of powered MS10 I think from the 80s or something), they make keyboards and pianos and guitars - I still have a black and gold label acoustic. Drums, wind instruments...
So as much as I love Honda products, right back to my first car (a 1981 Civic) to my first new car (1989 Civic), Yamaha gets the nod by being more diverse yet also by being known for the same high level of quality associated with their name.