^^^ Actually, we don't know that SARS is weaker for several reasons.
The Covid death count has been so extremely skewed by vast amounts of incorrect cause-of-death reporting, that there is no way to determine if we are even near the truth in Covid death counts.
Because of the way Covid deaths have been counted in the Covid pandemic, we are finding all kinds of mistakes and downright lies in the count. The only reason we don't know if it was the same with SARS is that we weren't expecting bad counts back then at all. Now, it is difficult to go back in history to find out if the death-count games were played back then, and which direction - more or less - they might have been played in.
To top it all off, there isn't any clear reporting that there even is a virus in the way people understand viruses. Consider. The same snippet of DNA in the so-called Covid virus, is just the same as a snippet of DNA in Chromosome 8 of every cell in the bodies of every person in the whole world. In addition, there is purportedly an exosome expelled by the cells of our bodies that looks just like the Covid virus.
This all being true, most of what we read about the Covid virus is really not known to be fact at all!
Let us say, we remove half of the reported cases for covid, then it is til far more worse than the SARS, moreover, Covid is still spreading, while the count for SARS has been deducted to specific amount since it has been already tabulated in our history for more than 15 years.
You said that " it is difficult to go back in history to find out if the death-count games were played back then, and which direction - more or less - they might have been played in. " yet you claim that it is same with covid. The fact that you acknowledge that there is a possibility of a misplay in the count of the SARS before, definitely means that the final tabulated cases in our history can be false and go down by hundreds. Besides, we are currently experiencing the pandemic, and I can conclude that this is real, there are shear amount of virus affected in our neighborhood, thus results to our lockdown. It is only in our NEIGHBORHOOD. What we are talking about is the whole number of cases in THE WORLD.