https://jamanetwork.com/journals/jama/fullarticle/2803749
Even now amidst Omicron, high population immunity, vaccination, and antivirals.
Death rates among people hospitalized for COVID-19 were ~17-21% in 2020 vs 6% in this study covering October 2022-January 2023. Meanwhile death rates for those hospitalized for influenza were virtually unchanged at ~3.8%. Even now the risk of death for those hospitalized with COVID is 61% higher than the flu.
And as the authors note COVID hospitalizations are 3 times higher than flu hospitalizations during this same study period. So it is not only deadlier, but also causing significantly more hospitalizations.