Yes, and that was Lucas strategy since the beginning, lol!^ But with the extra Bulk, it can DD more times.
Scratch that, Altaria has 75 / 90 / 105 Defenses.
I'll do calcs:
0SpAtk Vanilluxe (Neutral) Ice Beam vs 252HP/252SpDef lvl 50 Altaria (Neutral): 369% - 435% (672 - 792 HP). Guaranteed OHKO
Assuming for ingame, most things that have Ice Beam OHKO. Dosen't really matter whether or not it has STAB. But either way, you'd have to see the Ice Beam coming.
^ But with the extra Bulk, it can DD more times.
Scratch that, Altaria has 75 / 90 / 105 Defenses.