If this is the case, I absolutely see Intel flying right past Apple sooner rather than later.
There will still be yearly updates for the A-series, question is wether they will bother growing out each generation to a full set of M chips. Something they didn't do for iPadPro chips, so nothing really new here.
If thats true:
M2 == bigger A16 released around the same time
M2Pro/Max == bigger M2 released shortly after A17
M3 == bigger A18 released around the same time
.....
As for Intel flying by, law of physics apply.
- x86 is far inferior to a modern ISA (has been true eversince 8086/88 vs. 68000)
- AMD-64 is only slightly better and both Intel and AMD will be forced to drag 32Bit around for the time being
-> If the Intel chips has a much higher TDP, Intel uses a smaller process or has much better engineers they might be able to pull somewhat ahead, but with all those being more or less equal the will lag behind by quite a margin.