This place is legit.
If you're coming here, be prepared for some spicy food. Do not back out of ordering real Sichuan spicy, or else you'll get some mediocre attempt at Westernizing the dish.
Please educate yourselves before visiting, or else you might risk hours of confusion over the menu: http://www.seriouseats.com/2014/08/what-is-sichuan-szechuan-chinese-cuisine.html