None of those matter unless he either has Superspeed - faster than Emma can think, or Telepathy resistance (And by resistance, I mean damn near immunity, since Emma has a history of getting around psi-shields).
Has he shown either?
If not, then Emma either makes him her personal slave, or simply turns him into a vegetable.
Can Emma turn into Iron? Oh no, that's diamond. Nope, she loses. Because I highly doubt she can do anything to one of, if not the most powerful being in Gargoyles period.
I took this from the Gargoyle wiki-
Oberon is one of the most powerful individuals in the Gargoyle series. Only Queen Mab's power is greater than his. But still he was able to overthrow her. (And maybe Titania is as powerful as he is, although she usually stays in the background.) He has displayed a vast repertoire of magical powers, such as:
Flying
Shape-shifting
Conjuration
Telekinesis
Teleportation
Super-strength
Spellcasting
Hypnosis
Energy Blasts
Power-stripping
Reality-bending
Animating inanimate objects
Enchanting
Casting Illusions
Moving at lightning-speed (maybe only over short distances)
Energy absorption (lightning to grow to immense size)
Fast regeneration
To let others falling into sleep with a look
Conjuring objects
Control over the forces of Avalon
Creating strong gusts of wind (through hand moving and blow)
Sensing Titania (and maybe other fairies)
Penetrating through solid matter
Turn someone into glass by touch
Freezing
Re-changing others
Melting objects
Reflecting energy shield
High resistance to physically injury
Reflecting energy blasts by hand
Greg Weisman revealed that Oberon can do anything he can imagine. The only limits to his powers are the common weakness of all fairies to iron and the laws Oberon made.
So yes...Emma is f*cked five ways from Sunday as he can use telepathy as well if he feels like it.
Funny thing is, Queen Mab was supposedly stronger. Then he overthrew her so yeah...Oberon is the top dog in Gargoyles, and would be kinda high up the food chain in Marvel if not for his iron weakness.
Well Emma doesn't have an iron bell. And Titania is nearly his peer in power. She's the third most powerful Fae behind Oberon and Mab, or could be considered second since even though Mab is supposedly more powerful, Oberon overthrew her and they could be considered equal. He also wasn't expecting her to betray him if I recall.
Point is, Emma dies. This is a stomp in Oberon's favor.