I guess I'll comment since I've done more then enough GW vs DK moneymatches and I have some GW knowledge myself (<3 you Dire). I hope my DK bias doesn't take over...
DK: Wins on FoD because of small blast zones on the sides, and high ceilings/floors which help a lot with recovery/living for G&W, but hurts DK a lot. G&W's range helps a lot in the matchup. G&W can also duck and get hit with the weak part of bair if they aren't ready for it for a free dtilt if they attack high.
That's if they autocancel Bair. DKs never do that.
Other then that Bair hurts GW pretty bad since he doesn't have the pressure or speed to beat Bair ****. I also think it's funny how Bair can hit you when you shield haha. I know DK has a pretty horrid shield, but GW... damn.
I don't see how DK doesn't win on FD, PS, and DL. Dash dancing camping into grabs alone is pretty bad for GW. With so much room for DK to move, Fairs and Dtilts (disjointed hitboxes and all considered) aren't going to help much vs a well spacing DK. GW dies early to cargo throw + Uair on PS and FD. On DL, have fun trying to kill DK while he has a much easier time damaging and safely KOing.
Characters with vertical recovery are the easiest for DK to edgeguard/gimp, simply with a ledgedropped Up B. Also there's the fact that if DK cargo downthrows them off the stage (even at 0%) and grabs the edge, they all need to double jump + up B to make it back. If they try to sweetspot, they risk getting gimped. If they land on stage, free punish.
Yoshi Stories is cute. Imo, GW's best edgeguard vs DK is dtilt. If you jump out to hit DK with an aerial for pretty much any character, expect to get hit from an Up B. What many don't know is that DK can float a decent space away from the edge and still grab it. GW's gay as dtilt still hits us, so we have to hug against the stage. Anyways, on YS, the slant makes it ******** for GW and he doesn't even need to read for which way we're recovering. Good thing he dies super early. It's because of that reason I would say DK still has an advantage here, especially since DK isn't like Falco (don't take this the wrong way) where he can accidentally end up offstage and die from 1 hit.
FoD... I wouldn't say is that bad for GW. Ceiling is really high and the platforms kinda **** up DK's approach.
Looking at your post on the first page which listed everything, it's basically saying GW beats DK, which is something myself and any other DK would highly disagree with. GW's weight, mobility, and terrible defenses (shield/rolls etc.) carry more weight then his disjointed hitboxes. We think it's at least 60/40, we should have settled on the matchup itself before going over the stages. I'm pretty sure we left the matchup listed as DKs favor on the previous thread, so the stage discussion should be based on that. I'm assuming you think it's GW's favor?