I think she's got the potential to surprise the audience. She is Israeli, and she probably did her time in the IDF. I bet she can probably get the fighting parts right. But she's probably going to have to get into a significant training program.
As for measuring up to someone like Linda Carter? Film makers managed to get Angelina Jolie to measure up to Lara Crofts ample proportions. They can probably do the same for Gal Gadot.