Judging on what Cousineau wrote in her last judgement on Jonny boy here, he's gonna win this case. She stated that while trans women are women a d have a right to gender affirmative blah blah, no-one should be forced to touch someone else's genitalia if they don't feel comfortable doing so. This case is about leg waxing, not genitalia.
Yes, he's only targeting forruns again. Yes, he only did it because he wanted to take it to tribunal, and having lost the last case he wants to punch everyone in the face metaphorically and win his right to make people wax him somewhere. And not, he doesn't actually want his legs or any other part of his anatomy waxing (he could do it himself at home if he was that desperate, ffs), he just wants to cause trouble. And this is an easy way to get another hit of being everyone's most hated fat pedo in a dress.
As Ronan Ogre pointed out, the legal case about waxing troons is one they want to push in Canada. This is a new try at eating away the protections businesses have from weirdo litigious perverts like JY. If he can get the court to rule in his favour about leg waxing, he can demand as many forrun women wax his legs as he likes, whether or not they say they only do real women, their husbands won't let them, or it's against their religion. And I have no doubt that if he wins this case he'll do exactly that - not because he wants his legs waxing (oh, he'll ask for arms and chest and butt too, I'm sure) but because he gets off on making people deal with him with a fake smile, knowing they're incredibly uncomfortable with it.
(I'd go as far as to say that's the whole reason Jonny trooned out - to force himself on people who can't say no. He has no interest in being female, but if getting attention means getting a full face of makeup done at Sephora, he'll go through with it because it makes his microdick hard that the girl having to powder his face is hating every second of it. He's hardly the only troon, queer or sjw to do this sort of thing)
Tl;dr JY will win this case, because it's not about genital waxing, and men are women if they say so in Canada.