That page states that the HB-105 were the budget version of the "Blackouts" pickups, but as I recall, they are basically closer to traditional EMG's with tweaked preamps. It's been a while since I played the 105's in comparison to anything else, but I remember my "real" Blackouts being much fuller/thicker sounding with more output.
And, yes, this forum is the best place to get information about the character of pickups. Things like DC resistance specs or Bass-Mid-Treble charts are pretty much useless when trying to determine what a pickup really sounds and plays like.