From the descriptions there and coming out of Italy it should be clear that COVID-19 is much worse than the worst flu we've seen in a decade.
The only thing keeping deaths low to this point is that it isn't as widespread.
Nevertheless, it's not a flu.
And I'd actually also disagree that this is 'nowhere near as bad' as COVID-19. In countries like Germany or South Korea the death toll with high rates of testing appears to be somewhere in the 0.2 - 1% range. That's something I would argue is a difference in quantity rather than quality, with the dangers lying in the aggregate disease burden and vulnerable populations in particular.
It seems like the nature of the overloading is different.
In particular, from those reports you mentioned, it doesn't seem like staff had to decide which patients to treat or not.
With COVID-19 we are hearing reports of some patients not being treated because there is not enough capacity (either staff or equipment) and so the death rates can be very high as many people receive inadequate treatment.
to be fair it certainly can and does. The 2017/2018 influenza pandemic was probably the worst one in a decade, with 35 million infections, 700 000 hospitalizations and 60k deaths, and people for a while were treated in tents and a state of emergency was declared in Alabama, and Southern California and Texas had to turn away patients.
https://time.com/5107984/hospitals-handling-burden-flu-patie...