It honestly should be. We have to remember that beyond fodder, Luffy and Whitebeard were the only main focal points of Marineford.
- Luffy, being the main character, was weak and got trashed the whole arc.
- Whitebeard, being the strongest power there even while dying, had his story finish there in the present, so he received a ton of screentime.
- The admirals, Jinbe, Ivankov and most of the Shichibukai were too strong compared to Luffy. Oda had to hide their strength for the most part.
- Everyone else for the most part are "big" name characters that were background fighters (vice admirals, new world captains, etc).
Compare that to Wano:
- 2 Yonko with their alleged full forces. 1 or both need to go down this arc, like Whitebeard. Their crews need to go down, indicating more panel time for the subordinates anyway.
- Luffy's entire crew is here, and main characters for the last 350 chapters (Scabbards, Supernova, Minks etc) are clashing. This is effectively different than the higher up Marines/New World Pirates in Marineford. Jinbe, Neko and others will show up eventually.
- Luffy is now allegedly the strongest person here. Compare that to Marineford.
Oda HAS to show the above winning or losing. This won't be a stalemate. I personally believe the action in OP gets offscreened when it leads to literally nothing. Oda doesn't have time to draw action panels that don't drive the plot. Compare this to the following:
Zoro vs. Killer: Led to Zoro being taken care of by Hiyori and Killer ending up in Udon.
Not offscreened.
Sanji vs. Page 1: Led to literally nothing, except to tease the Germa suit. We can't even assume what happened to Page 1 other than Sanji "MIGHT" have whopped his ass.
Offscreened. Add to the fact that Page 1 is a Zoan, whom have an extremely high recovery rate. Sanji may be too strong with him, but that doesn't mean someone else will be.
This is why I personally think, like Dressrosa, Oda will dedicate panel time to each an every hero and villain this arc. It will take 60+ chapters, IMO. And this is why he offscreened a lot in WCI. Many of those fighters in WCI are presently here, fighting in Wano. The payoffs from that arc may happen here, regardless if BM is taken out or not. So we should see Smoothie, Daifuku, Pero and Campote fight properly I'd say.