Coincidence or not it’s pretty funny that the strongest strongest pirates and marines in recent history use the power of shockwaves/internal damage
Obviously having that type of ability doesn’t automatically or inherently make you the strongest like at all but the fact all 4 lowkey specialize in those type attacks is interesting
Whitebeard can obviously do it through his devil fruit with it literally giving him the power to make earthquakes
Roger being Mr. Haki himself is likely able to do so through his haki aka mastering the 3rd level of armament
Sengoku through his Buddha fruit can also create his own shockwaves that’s to it’s special ability
Garp also does it but whether it’s being of his Rokuogan aka the secret seventh rokushiki technique or “just” the 3rd level of armament idk. I personally think it’d be cooler it was through him being a rokushiki master but either way is cool
But yeah I just think it’s cool