It has eight cores in total, including two prime cores and six performance cores, and it is able to reach peak CPU speeds of 4.32 GHz.
The prime cores can reach 4.32Ghz, but the performance cores max out at 3.5Ghz.
I don’t think I would call this a mobile chip. It’s just a totally different configuration - there do not appear to be any efficiency cores, for instance.
Meanwhile, the A18 Pro, being an actual mobile chip, has 4 efficiency cores and only 2 performance cores. It’s mostly efficiency cores.
So this is a bizarre comparison and doesn’t really work out in Qualcomm’s favour. You would expect their maximum performance/zero efficiency chip to compare favourably in performance terms to Apple’s efficiency-focussed chip. Anything else would be a catastrophic embarrassment.