Biotest Ads?

I was thumbing through Muscle Development and noticed not a single Biotest ad. Any reason why? They advertise heavily in Flex and M & F.


I’m thinking it’s just more cost effective to advertise in the (former) Weider mags. That is, more readers per advertising dollar.
Or, perhaps, Biotest wants to avoid the image MD projects (doubt that, readers are readers and the ads don’t reflect the mag, necessarily).
I’m wondering if there are hidden agendas at work here…