-1 252+ Atk Choice Band Reckless Staraptor Brave Bird vs. 0 HP / 4 Def Gyarados: 295-348 (89.1 - 105.1%) -- guaranteed OHKO after Stealth Rock
252+ Atk Choice Band Reckless Staraptor Brave Bird vs. 0 HP / 4 Def Mega Gyarados: 339-399 (102.4 - 120.5%) -- guaranteed OHKO
OML THIS GUY HITS SO HARD
Yuuuuup... Gyara is doomed. So I pick Staraptor.
Haha, finally someone did the calcs. However, if Gyarados is running a tanky set with Intimidate. In addition, the Gyarados wins if the Staraptor goes for close combat predicting the mega evolution if he doesnt mega. In addition, Staraptor has intimidate, so what are the calcs in that situation?
We have these:
-1 252+ Atk Mold Breaker Mega Gyarados Crunch vs. 0 HP / 4 Def Staraptor: 145-172 (46.6 - 55.3%) -- 70.3% chance to 2HKO
252+ Atk Choice Band Staraptor Brave Bird vs. 0 HP / 0 Def Mega Gyarados: 283-334 (85.4 - 100.9%) -- 6.3% chance to OHKO
-1 252+ Atk Choice Band Reckless Staraptor Brave Bird vs. 252 HP / 104 Def Gyarados: 262-309 (66.4 - 78.4%) -- guaranteed 2HKO after Leftovers recovery
0 Atk Gyarados Waterfall vs. 0 HP / 4 Def Staraptor: 139-165 (44.6 - 53%) -- 25.8% chance to 2HKO
holy crap
The bird because I like him better.
It all depends on the set. Gyarados has stone edge, which chips away 90% of Staraptor's health. at Adamant 252, -1, and banded, even if Staraptor has 252 health. This is a one hit KO because Staraptor will likely move first and either do Close combat, Brave bird, or Double edge, which will either knock off a third of it's HP or decrease it's defence enough for Stone edge to completely take it out. Gyarados also has Avalanche, which knocks off
On the other hand, Staraptor can take down pretty much any physical Gyarados set by abusing Feather dance. After a feather dance, then a roost, then another feather dance it will have a serious advantage and whittle down Gyarados easily. But if Staraptor is Pulling off a crazy set, so can Gyarados, with a specs thunderbolt doing 94% dammage, again often 1 hit koing the Raptor due to recoil or reduced defence.
In The end, I think normal Gyarados will win most times. But Staraptor will always be able to beat megados.