Albertosaurus vs Edmontonia

I don't see how Albertosaurus is going to even attack Edmontonia. It's way to heavily armoured.

If Albertosaurus somehow managed to get around behind Edmontonia I could perhaps see it attacking there, Edmontonia doesn't seem to have much offense from behind.

Never implied it would try to flip it over, it could just try biting the back legs if it got behind it.

I have no idea if Nodosaurids like Edmontonia used there tails as a defence, but if they did, Albertosaurus is screwed.

Sure, it probably couldn't break bones like ankylosaurids could, but I think some bad bleeding is enough to get the Albertosaurus to back off, or even die depending on how bad it is, Also Allosaurus Rex i'm fairly certain that the Edmontonia wouldn't just stand there and watch the Albertosaurus kill it, but actually do something, Birds hardly stay still so I personally don't imagine Dinosaurs being that much different.

The herbivore is a better turner than Albertosaurus, so out maneuvering it wouldn't be the easiest of tasks, but I can see some fairly even results here. Interesting match, I can't see Albertosaurus doing much to Edmontonia but both outcomes are certainly possible. Wouldn't be surprised if this was largely intimidation-based.