Upset
The lower-ranked entity killed the higher-ranked one. The record and the ladder disagree.
The ladder stands, and the annotation on the record settles it: this is a device functioning, not a duel resolving. Second place already credits him as the instrument by which everything ended — that is the entire reason he sits second rather than nowhere at all. It does not follow that an instrument outranks the parties who positioned and aimed it, and the record stops at `stated` in any case. The useful question a page like this asks is who was holding what, and here the answer is legible.
Molecule Man killed The Beyonders in Secret Wars (2015).stated
he was the bomb they were standing next to
A Molecule Man exists in every universe as the Beyonders' means of destroying it. — 2015
Cuts Doom off mid-fight, then hands the power to Reed Richards to rebuild with.
The most consequential character in Marvel that nobody puts on these lists. He starts as a man who is frightened of his own hands, and ends as the Beyonders' demolition charge — a version of him inside every universe, which makes him the mechanism the multiverse was destroyed with. He is also where Doom's godhood came from: he switches it off mid-fight, and then gives it to Reed Richards to rebuild the multiverse with.
Named as the killers of the Living Tribunal and the cause of the incursions destroying the multiverse. — 2015
The multiverse ends, leaving one patchwork world assembled from the survivors.
They killed the Living Tribunal, they killed Celestials, and then they collapsed the entire multiverse to a schedule, universe against universe, until one was left. Nobody else here completed a plan that size. The contested tag is for the obvious objection: they barely qualify as characters, they have no dialogue, and their motive is never explained. The wreckage is still on the page.
One death in one work. It is the only place the record puts these two in the same room, and it is evidence about that meeting and nothing wider — not a general matchup, not a rematch, and not a ranking of its own. The ladder above it is argued from everything either of them has been shown doing; this page is argued from one citation. Where the two disagree, the disagreement is the point, and it stays visible rather than being resolved by whichever of them happens to be on this page.
Both entries carry their full receipts on the Marvel ranking — 4 citations between them.