Not sure this is an entirely fair comparison*, but Slott's last ASM relaunch (Worldwide) had issues 7 and 8 sell 75K/71K.
http://www.comichron.com/monthlycomi...8/2018-10.html
As always, it's hard to figure out a good time to compare sales for two runs (it's also hard to figure out why comparing incomplete sales numbers tells us anything, or why anyone should assume sales correlate perfectly with quality, etc.). Seems unfair to compare Spencer to Go Down Swinging, of course (since it was the big finale of a long run), but it's also unfair to compare month 4 of one writer's run to month 72 of another writer's run.
*Yes, it's the same amount of time/issues from a new #1, but it was also deep into Slott's run, so I'm not sure standard attrition/attention works the same way. The previous relaunch had issues 7/8 in the 100K range while in the middle of Spider-verse. I think, at best, the data suggests Spencer brought back some people that had grown tired of of Slott's run, but didn't cause a massive resurgence (obviously, we can't see all the data, so it's quite possible Spencer is a huge draw for the Comixology set or his TPBs will sell better, etc.).
Blue text denotes sarcasm