doubleofive said:

They creatures definitely move at different rates, so they were recomped, just probably not for the reasons they state.

Ah, I see.

zombie84 said:

It looks like that left part was a seperate comp added later to make the cockpit window not seem so wide, but re-comping it for the SE they didn't print it at full opacity for some reason, probably just sheer mistake.

Yeah, that sounds logical. It's funny that they recomped the shot to fix the opacity but in the process created a new transparent issue. :)