BF is often the issue. Vascularity only comes out when the body fat is minimal. As far as the EQ goes I'm in the midst of an EQ/Winny cycle right now. I front loaded the EQ the first two weeks. I'm at week six and just added the Winny. I had very noticeable gains and tremendous pumps at the three week mark. I personally attribute it to the front loading....
Of course it could just be that my body responds well to the EQ. But, I have heard from folks in the past that front loading gave them similar results. For the record this is my first EQ cycle so I have little to go by beyond my initial experience. Hope that helps anyway.