However Oda clearly tried to hype Shiryu and and with Viz it is even more clear.
Old Garp was clearly fighting for long enough already off-panel be it Kuzan or the other Teach Commanders ,yet the fodder were like this
The moment shiryu landed his attack they were like this
Sure it is a sword so a more lethal attack than the one he has taken in his head off screen ,doesn't mean it wasn't meant to hype up Shiryu.