Character. Each of the Optimi in the poll have more than one toy. Well, I guess you could argue that Fire Convoy/RiD OP and Cyberverse OP have multiple toys based on the one design. But the others have multiple designs (e.g. UT OP --> Armada, Energon, Cybertron etc.)
Alternity is part of the Generation 1 continuity family. We're looking at Optimus Primes from other continuity families.
Just as Armada, Energon and Cybertron Optimus Primes all count as "Unicron Trilogy Optimus Prime," so too do all Optimus Primes from the original G1 and "Neo G1" continuities (e.g. CHUG, MP, Binaltech, Alternity etc. - collectively known as the Generation 1 Continuity Family).![]()