Unicron vs. the Death Star: who would win?

Hitler.

Seriously, though, this is a perfect example of a question
that has been beaten into the ground. Someone asked this
sometime during the ’94 school year and the discussion went
on and on as more new people jumped in expressing their
opinions, which were, invariably, opinions that others had
already expressed. It degraded into the kind of discussion
you might see in a religious debate area where one person
says “no, don’t you see? it’s this way!” and the next person
says “no, you’re wrong! it’s THIS way!” and then someone else
agrees with the first person, and then the second…

The problem is that this is a fairly common first question
for people to post because they think (rightfully so) that
it’s an interesting question to muse over for a little bit.
Unfortunately, we’ve been put through this all several times
now and it’s worn awfully thin. IOW, most of the ATT
regulars will be extremely annoyed with you if you post this
question, or even something similar (Unicron vs. Galactus,
Unicron vs. the Zentradi war fleet, Unicron vs. M.Bison).

To actually answer the question… The side that favored
Unicron gave rationale such as his superior speed and
mobility, the ability to transform, and the toughness of his
hide (if an exploding moon didn’t scratch him, what good will
the Planet Destroyer beam from the DS do?). They also noted
that since the Matrix was the only thing that could destroy
him, the DS sort of loses by definition. The Death Star side
said that the DS actually had superior mobility because of
its hyperdrive, and that the Planet Destroyer could basically
blow up anything in the universe, even planets with tough
metal hides. The size question came up over and over again,
comparing Uni’s size in the comic to Cybertron in the comic,
Uni in the movie to Cybertron in the cartoon, Uni’s head to
Uni’s body to Cybertron in “The Ultimate Doom”, and every
other comparison that can possibly be imagined, in the hopes
of figuring out which one was bigger. In the end there was
no consensus, just a bunch of people yelling at each other.

Who would win?