I would recommend Argentavis for this fight instead of Wyverns for these reasons.

1: Argentavis get equal if not more ho to Wyverns

2: Argentavis get saddles meaning additional Armor

3: Argentavis are smaller than Wyverns so they are harder to hit

4: Argentavis have better turn radius

5: the manticore is immune to the secondary effects of Wyvern attacks, burn, shock, poison, so you will be relying purely on damage which is where Argentavis succeed in snide they’re physical says i is more reliant than that of a Wyvern in terms of speed