I'd argue that Perfect Susanoo is double the size of Oars. Large? Sure but it's not that much of a crazy feat considering what we've seen so far.
These weren't even the best feats of OP. I'd take Kuzan freezing the entire ocean, which affected several islands when people needed 3 days to travel from that one island to the next one, over Madara cutting several mountains for sure. Garp was using mountains as a punching bag and don't let me start on Punk Hazard when Kuzan and Akainu did this:
They massacred a large island like Punk Hazard.
One of these mountains carry a huge lab:
Madara vs Hashirama created Valley of the End in comparison.
A lot of these feats are Pre-TS stuff in OP btw.
Bro, we're not even at the start of the final war. I'm sure things will get even crazier from now on lol.
Btw, wasn't there even a panel when we saw several navy ships in front of that montain and these looked so freaking small in comparison? I miss the times when Oda was a bit more accurate about sizes in OP.