If the numbers in the graph are total growth in 24 hours, then omicron=10000 & delta=~140.
Calculate log(10000)/log(10000/70) = 1.86
Ie, omicron grows 1.86 times as fast as delta, or 86% faster.
That's significant, but 1.86 is a whole lot smaller than 70.
(If the numbers in the graph are something else, then we actually can't tell what the ratio is.)
