First, quarterly revenue were not the same, so can't take the average across 4 quarters and multiply against the annual revenue.
Second, the numbers you used are for FinFET & 28nm (not just for 28nm). The bubble chart did perform a bit of extrapolation to split the 14nm & 28nm revenue.
SMIC is running at above 100% utilization (even skipping scheduled maintenance) on all of their lines. That's the reality, the numbers just reflect price changes (they refer to sell values) and have little to do with actual capacity, that unfortunately increased just a little bit in the last year.
SMIC just needs to put online new capacity and it will be already all sold off immediately. Some fab are under construction but real new capacity is scheduled only for 2023....if some surprise does not occur before....
If SMIC succeds in putting online their new fabs, even a ban of ASML will have a lesser effect. Time window for US to act is just 6-8 months now, not more, they really cannot wait until Trump 2.0