He was good, but his style and verbosity made his stories progress at a wading-through-sludge snail’s pace. Panther’s Rage was great, Killraven one of my favourites as a kid.
The Bronze Age writer with the most generally accessible, but overwritten style for me is Steve Englehart, who did try to create a faster, much more energetic pace despite high word density. (I’m referencing Avengers and Doctor Strange here.)
That said, the happy medium between the two, and my favourite, is Chris Claremont. I read his stuff all the way through the 70s and 80s, but newer readers can often find it a bit on the cold, detached side in tone. Still brilliant enough in both quantity and quality of material to make my top five.