“In case the graph didn’t make it clear”… neither of the two y axes on the graph are labeled, and the ticks on the right-hand axis don’t even line up with the grid lines. Both are linear at least, and as such I’d have put the Geekbench increase at about 11.5 times from earliest to latest data points.
So yeah, not at all clear to me, but at least you have a pretty graph for people to skip over. Everyone likes those.