Friday the 13th part 2 similarities

Ok so I saw the post about how Pam looks like Ginny from Friday the 13th part 2, and I agree. And although these both came out in 1981, there were two scenes in particular I recognized while watching this movie that seemed to be written almost exactly like Friday the 13th part 2. The first scene being when Ginny's lookalike, Pam, is hiding under the bed while the killer is in the room with a pitchfork when a rat comes over to the heroine. The second scene comes shortly after when Pam held the broken pitchfork out in front of her when her assailant was making his way into the room she escaped to. It looked like when Ginny held the pitchfork out in front of her when Paul was going to open the cabin door after hearing noises outside. Friday the 13th part 2 is one of my favorite movies and I've seen it dozens of times. I guess that's why I noticed, but I'm still shocked no one else had. Watch those parts and compare for yourself!