Both pay about the same
Is the displayed title on your Google profile SETI or Software engineer?
It’s say SETI. SWE and SRE are the same hiring pipelines, SETI has its own pipeline. SETI has to reinterview to transfer to SWE and SRE. SWE has to re interview to transfer to SRE. SRE can transfer without interview to the others. An exception can be given for SWEs that pass the SRE bar, they can be flagged as able to switch to SRE when joining. This should give you a hint on how they are viewed.
SWE > SETI
How much, examples please, say for an L3, L4
Use the search feature on Blind, come on dude.