Ann: FY20 Appendix 4E Preliminary Final Report, page-96

APT: $11b in sales, net margin of 2%, market cap of $25b
Z1P: $3.3b including Quadpay annualised sales, net margin ~2%, market cap of $3.5b.
Based on afterpays valuation zip should be a $7.5b company.
You get similar numbers when comparing revenue.
growth is on par, with potential for zips growth to be greater in FY21 due to the inclusion of Quadpay.
Operating costs and net losses can't be compared. they are at different stages and zip will be where afterpay is in under two years.
I think both are overvalued but if afterpays value holds zip is worth $18 per share now and should be equal to afterpays current position in under two years at the current 90% growth rate.