More or less -- it's worth keeping in mind that area damage (eg, crowd control) -is- a controller feature, both because it denies minions actions (by killing them) as well as because it forces opponents to use inferior tactics and not bunch up.
So whether a Genasi EE wizard is a controller who subs striker or a striker who subs controller is very much a question of what powers they choose. At 1st level it doesn't make much of a difference (as Flaming Sphere, that amazing controller daily, is also an even more amazing EE striker daily, and l1 encounters are way weak) but there's a lot of later freedom in the archetype even if your big advantage is "moar damage" (particularly since dailies don't benefit from enlarged spell -- so there's a good incentive to pick "the good controller power" of that level rather than grab the biggest elemental damage thing you can find).
In general, of course, Enlarged Winged Horde is better than Enlarged Scorching Burst because it'll typically do more damage (nuke the melee) as well as deny OAs (and in so doing, deny flanking and deny grabs).
So whether a Genasi EE wizard is a controller who subs striker or a striker who subs controller is very much a question of what powers they choose. At 1st level it doesn't make much of a difference (as Flaming Sphere, that amazing controller daily, is also an even more amazing EE striker daily, and l1 encounters are way weak) but there's a lot of later freedom in the archetype even if your big advantage is "moar damage" (particularly since dailies don't benefit from enlarged spell -- so there's a good incentive to pick "the good controller power" of that level rather than grab the biggest elemental damage thing you can find).
In general, of course, Enlarged Winged Horde is better than Enlarged Scorching Burst because it'll typically do more damage (nuke the melee) as well as deny OAs (and in so doing, deny flanking and deny grabs).