Staraptor with both of those moves would have superior DPS to Rayquaza, likely replacing it as a go-to flying type attacker. The (assumed) ease of access as the early route bird more than compensates for its reduced bulk.
The theoretical flying-type king would be Moltres if it ever got a double flying moveset, having higher DPS and TDO than all other options. It currently learns all flying fast moves in the game and has access to Sky Attack as well.