I would say the same goes for emulation, not being able to detect when playing on a proper setup. Besides I don't think its a fair comparision between a free solution and a $100 solution.
A hundred dollars is nothing on the turbo. That same $100 will hardly get you anything with today's prices. Playing on real hardware with a genuine NEC controller is where it's at for me. I don't need a bunch of games cluttering up my house like some jackass on youtube. I'm about playing games on real hardware, not collecting plastic cards or boxes.
Emulation still has problems like lag, wrong colors, glitches, poor sound, etc. A raspberry pi might be the final solution one day, but right now, it still has problems. The Wii does a good job because you can at least output 240p to a CRT over YUV, but I want to turn the damn thing on and just play with the original controller which the Wii won't let me do. The Wii makes you use that stupid Wiimote and go through several menus to get to the games. And, at the end of the day, it's still not perfect.
Bottom line: Whether you use an everdrive or the original card, the game plays exactly the same. The same cannot be said for emulation.