^ Somewhere in there... The idea is that Skull got the incomplete formula (no vita-ray treatment). Blonsky got some off-shoot, derivative, re-formulated, or just similarly incomplete treatment as Skull did (TIH wasn't clear what the serum Ross pulled was... what it the same old one, or something based on the original???).
Either way, the effect would be a related one, and we would see them exhibit similar side-effects... Which would included super-human capacity rather than peak human (since Blonsky looked a bit above the curve in TIH), making a Skull cap show down pretty intense... also there is the skeletal mutation, and of course... madness.
Overall, the SSS is a great device for the development of heros and villains in the Marvel-Movie-verse. There can be bastardized formulas made by the Leader, by AIM, by the U.S. Military... that empowers any number of characters (Luke Cage, the U-Foes, Hammerhead, Wonder Man, Tombstone, The Rhino, etc...).