This topic seems dumb but I actually strongly believe that it has a lot to do with "direction" in manga, or call it panelling if you want (but it goes beyond simply panelling). Many times I've done the back and forth between manga and anime, sometimes beginning with the manga and vice versa
On the top of my head the manga that are actually great to read are very scarce and anime are more natural to watch even if they often have poor direction and pacing.
Most of the time, even though the art and the story are great it is a pain to read.
For example I think that the Death Note manga is way above its anime adaptation yet I can completely understand that it is easier for someone to get in through the anime due to the music, the colors, etc. You are immersed more easily.
So anyway let's end my blog here, just wanna mention a few manga that I love from a "direction" point of view (and wouldn't be better off animated) panelling, lisibility of the action, etc. I love clear panelling:
Gon by Masashi Tanaka - maybe one of the best manga ever made, will never understand why the artist didn't do more? Maybe Gon was enough for him to be rich as fuck?
Ozamu Tezuka, in particular Buddha and Phenix
Jiro Taniguchi, in particular Haruka na Machi e
Shamo, ignoring all the post hiatus volumes
Hellsing, even though the adaptations were good
Dragon Ball & Z, yes the story is a blast to read, very clear
Eternal Sabbath by Souryou Fuyumi
Bokkou by Hideki Mori