massive perf regression in 2.0.1 build 156 (observed in rerun of MB-6726 and MB-7797)

According to data at: https://docs.google.com/spreadsheet/ccc?key=0AgLUessE73UXdDV1SXhUZjJ0b0RhU3gtdlUzZGloUFE#gid=0

we've regressed 2x in build 160. There were very tiny changes since build 156. With 160 itself no different at all compared to 159. http://builds.hq.northscale.net/latestbuilds/CHANGES_couchbase-server-2.0.1-160-rel.txt

I need somebody answer very simply question. Have we regressed or not?

I'd like to CC folks: Filipe, Damien, Jin, Dipti, Farshid, Pavel, Yaseen but jira doesn't allow me.