No. They have nothing in common except for two parts. The eyes, hands, legs, texture, color, size, spinal configuration, and pretty much everything except for the fins and (and this is the one that seems to be catching people) the mouth, are different in the two models. Even the Willosaurus has way more similarity between extreme stages than that.
Meanwhile, the willosaurus has spinal configuration, tail, eye type, eye configuration, mouth type and placement, accessories, coloring, texture, and markings in common.
Since mouth parts are basically used to define a head, it becomes a primary eye-catcher. But that doesn't mean those two creatures have anything in common but their mugs.