The Moto MC68000 CPU in the original Mac had 68k transistors. Apple sold 372k units in 1984. 68k x 372k=25.3bn
The A12X SoC in an iPad Pro has 10bn transistors.
So, if you’re inclined to really unfair comparisons:
3 iPads => all Macs sold in the first year

Found via https://twitter.com/benedictevans/...