The BuildLog should probably just include a-full and a-quick builds. At least, it should filter out buildperf-* builds.
We do need failed buildperf builds on that page but not successful ones. I've tweaked http://git.yoctoproject.org/cgit.cgi/yocto-autobuilder2/commit/?id=31f297e026612b9f6fcf04ae96491a0befa3fe60 to better handle this so only failures get added to the page, or full/quick builds.