I see. When I was looking at the arms of Torvosaurus and Baryonyx, I did notice that they were similar. Hopefully we'll find a transitional Megalo-to-spinosaurid in 2014!
Actually, we may already have one. Monolophosaurus has shown up as immediately basal to the meg+spin clade, and it has a prominent midline crest on its skull and sort of "rosette" of teeth on its lower jaw like spinosaurs do.