I do think other actresses who aren't bulky could gain mass and definition with the same effort Gal put in, maybe even faster. She's just not becoming more than what we've seen. And frankly, there are old pics of her in which she looks the same as she is now. It's like she didn't gain anything, just regained after being more skinny.
Someone I talked to made a good point about how she wouldn't be bulky even if she could. That would affect her modeling career.
IDK, we have to wait. But I have no faith that she will be exceptional. Maybe not bad, maybe fine, but I don't see how she can be "wow, this is the Wonder Woman we need". If the script and the movie are awesome, we can get over it.