I think the reason Angel/Cordy has a slight edge on Spuffy in the votes is that while Spuffy is super unhealthy and abusive, it's not an actual threat to Buffy/Angel. Buffy isn't falling in love with someone else. Angel/Cordy, on the other hand, however forced and badly written it is, attempts to position Cordelia as Angel's true epic love. Which is nonsense.
Basically this. 100% this. This is gonna be a long one so settle in ...
I voted for Spuffy and Cangel (despite my hate of Scott Hope he was of no consequence). I wish I would have made this a one vote only quiz now so I could see how Spuffy and Cangel compare, especially for Bangel shippers.
Thoughts on Spuffy: Spuffy always bothered me much less than Cangel. I could see Spuffy coming from a mile away at the beginning of Season 5. I go back and watch Season 4 and now I think the writers already knew what they wanted to do way back then but Spike was always going to be the guy that Buffy slept with and that was fine by me. The Season 6 Spuffy doesn't bother me one bit. Its a depressed girl in her 20's making bad decisions. I have been there myself before, totally get it. Its not epic love stuff, its a symptom of her depression, her isolation, her sadness. Spuffy was always written to respect how Buffy felt about Angel.
"A vampire got me hot. One. But he's gone. You're just... You're just convenient."
Even in Season 7 she says that she loved Angel more than she will love anything in this life. So while the Spuffy stuff is gearing up for the Season 7 silliness, Angel's place in her heart is addressed and respected.
My dislike of Spuffy probably doesn't really reach any type of significance until Chosen when she effectively sends Angel away for Spike. It was narratively necessary so I get it. She has feelings for Spike at that time and I respect that as well. Having Angel there would be weird BUT once again, the moment she sees Angel her face lights up and she kisses him. Bangel respect. Now the comics are a different story and if I include the comics into my Spuffy analysis the scales do tend to even out a bit but Cangel still holds the edge and here is why.
Thoughts on Cangel: I still remember watching Season 3 of Angel for the first time and feeling absolutely SLAPPED IN THE FACE by Cangel. I had no idea it was coming, I did not read the signs, I obviously had not read the interviews or the behind the scenes stuff. Just a girl sitting in her dorm room (I didn't watch it when it aired it was a few years later I got into Angel) and then BAM I'm hit with Offspring and Waiting in the Wings and I'm like WHAT THE EVER LIVING F??? I felt like I missed something with all of the Fred and Lorne stuff about Kyrumption and Moira. Not only was it rushed it came on the heals of Buffy's death and resurrection. Its just TWO episodes from Fredless to Offspring and in Offspring we are already in the throws of Cangel. The timing could not have left a more sour taste in my mouth. The only way to read that is that Angel doesn't care that Buffy is back from the dead he is going to pursue his feelings for Cordy.
Whereas Spuffy addresses the "Angel" thing during the course of its relationship (see even the Comics where Buffy has to talk Spike down in Season 10 when Angel is coming to visit). Neither Angel nor Cordy EVER discuss Buffy within the context of the relationship. She is just the giant elephant in the room. It seems the writers decided that it needed to be ignored for the Angel and Cordelia stuff to happen. But for me as a Bangel shipper it leaves me confused, where does Angel stand on Buffy during this time? Does he no longer have feelings for Buffy, does he still love her but he knows it can't happen, is he trying to ignore that Buffy even exists - I have no clue what is going on in Angel's head with regards to his feelings for Buffy and if I'm looking at his actions alone it looks like the guy has just moved right along rather suddenly.
While I agree with the others that the whole relationship seemed rather "forced", this is the only other relationship outside of Bangel that mirrored the stuff of "great love." Sure they have to mold and twist these characters we know and love to get there but they have this passionate scene in Waiting in the Wings (probably more than we ever saw SMG and DB do), they have this sweet "family" dynamic with Connor, they have this romantic "I'll meet you at the Bluffs" discussion wherein we are lead to believe they were both going to confess their love?, Angel loses his soul by imagining a perfect day that includes sleeping with Cordelia. This wasn't written as a rebound (Riley) or a bandaid (Spike), this arc was written to replace Bangel and that was the most heartbreaking thing to me. Glad it didn't succeed though...
😉 Also, very happy that Angel never told Cordy he loved her.