That is under debate, even by the WHO right now:
https://www.who.int/docs/default-so...0306-sitrep-46-covid-19.pdf?sfvrsn=96b04adf_2
Page 12:
"The reproductive number – the number of secondary infections generated from one infected individual – is understood to be between 2 and 2.5 for COVID-19 virus, higher than for influenza. However, estimates for both COVID-19 and influenza viruses are very context and time-specific, making direct comparisons more difficult."
And R0 is just one measure, important for spread. WHO points this out:
"Further, transmission in the first 3-5 days of illness, or potentially pre-symptomatic transmission –transmission of the virus before the appearance of symptoms – is a major driver of transmission for influenza. In contrast, while we are learning that there are people who can shed COVID-19 virus 24-48 hours prior to symptom onset, at present, this does not appear to be a major driver of transmission."
The above is very advantageous for fighting off COVID-19. It means if you graphed out the % of R0 in COVID-19 vs. Influenza which are from the pre-symptomatic phase, Influenza is higher. You literally have the opportunity to "flatten the curve" as
@EVNow likes to say simply by telling people to self-isolate at the first sign of symptoms. You don't get that much of a chance with Influenza.