I don't think so. The WS-20 here looks just as forward if not more forward. It is hard to say because of the angle. What is certain though the engines we are seeing on the photo are way too fat for the D-30. So they are either the WS-20 or all the aircraft on the photo have all of their D-30 engine cowlings open.Really hard to tell, but it does look like some of those could be WS-20s, especially the green ones? Doesn't the WS-18 stick out forward a bit more? Can someone else try to estimate with the pixel lengths/widths.