Wow. Here you are doing great art and some numbskull comes along and thinks he can use it to beat women down with a stick by criticising your work and claiming "BroShep would stand a better chance because he has a dick and that makes him physically more strong".
Anyways, your work here is awesome! And also, what numbnuts in the previous thread doesn't get is that they are in fact, in reality: THE SAME PERSON (voiced by Jenifer Hale, am I right?). GREAT IDEA! The detail is beautiful too by the way. If you wanted constructive criticism, the only thing I could really say is that perhaps Shep would have been with a backwards stance of some kind (so having them facing off in a similar way, and that motion for FemShep might need a little work (blurring? Hair moving? FemShep doesn't get magic unless you're going to give her a biotic field so motion is gravity/wind based). I think you've tried to do that but maybe more around the head, I'd recommend focusing on arms and legs for movement shows, because those will be the body parts most in motion.
My one and only niggling thing about this piece is that FemShep's got slightly high-heeled boots, for which there is no need (it does not aid fireman's lifting Ash/Kaidan for example, or saving people from falls to their death). *But* that is hard to tell, and may not have been intentionally so, so it's really a minor complaint.
Great piece overall and really love the detail you've put into the surroundings. Everything from leaves to bark to ground is beautifully done. Fantastic job! Incidentally, might I ask if I can add this to the albums of a Facebook page I admin called Mass Effect Female Shepard? I'd reference you as artist of course, and provide a link to your original here. I'll understand though if you'd rather not - not all artists are a fan of Facebook after all!