The dishes sound like American/Italian with an Asian spin (mostly Thai). Its fusion food. Sounds like a place to visit if I want to celebrate something and not for regular attendance. Too pricey for me.
If you're looking for sushi go upstairs and eat at the Orchid Court Sushi Bar & Lounge. If you want a steak then go to The Palm at the Hard Rock Hotel. Those are much better options than Emeril's.
Yes, the menu is a bit pricey, but compared to other higher end restaurants at Universal and Disney, the prices are pretty competitive.
If you want to try one of this outstanding restaurants then go to the Delmonico Steakhouse at The Venetian in Las Vegas. It's superb.
As I said, I would NEVER recommend any person to order sushi from a restaurant where you cannot see it being prepared. However, I would recommend Tchoup Chop to Orlando visitors looking for an interesting, albeit pricey, asian fusion restaurant.
I have not eaten at Delmonico's in Las Vegas, but I have at Prime at the Belagio, and that is quite a restaurant. But comparing restaurants in Las Vegas to those in Orlando is like comparing Disney and Universal attractions to those at a local amusement park. The food scene in Vegas is extremely competetive and features some of the biggest names in the culinary world from Bobby Flay to Gordon Ramsay to Tom Collichio and many many more. Las Vegas is the Orlando of restaurants, so I think you're making an extremely unfair criticism.
Tchoup Chop should be compared to other themed resort restaurants and asian-fusion restaurants in Orlando. Considering there's not really a lot of choice in the asian fusion category (I think it's easily better than the over-commercialized and heavy handedness of P.F. Chang's), Tchoup Chop stands alone. However, if I were to compare to other high-end "signature-style" theme park dining options, it is average to slightly above. I actually dined at WDW's Artist Point at Wildnerness Lodge the following night, and was blown away with what they offered, which was even more pricey than Emeril's.
Perhaps your friend steered you wrong to try the sushi here, but as an asian fusion restuarant, Tchoup Chop is worth a try even though it's off the beaten path.