[Den-O]

As I explained when Decade was up against OOO I'm of the opinion that Decade is the strongest. His existence alters realities, he can become previous Hesei Riders and use all their abilities (negating any advantage a rider would have against him as it evens the field), in complete form he can summon the final forms of the 9 Heisei Riders to do their final finishers. I'm baffled as to why his victory in any matchup isn't assured. With his power set he'd almost be assured to win, no one has to agree with me that's just how I feel. Because of the way in which his powers work and what he can do I don't think he would lose.