What size are you looking at in particular? There are some (mostly) minor differences between the two bikes' respective geometries, but how those differences would translate for you is hard to tell. I can tell you that a few millimeters here or a half a degree there can make a big difference for me. My big limiter is seat tube angle and top tube length. For someone my height and leg length, I have relatively long femurs. Thus, to make my knees happy, my seat needs to be set back quite a bit. Pushing my saddle so far back effectively makes certain bikes two long in the top tube for me. I also need a bike with a seat tube angle no greater than 74.5% (and even that is pushing it) in order to get my saddle far enough back. So, for me, minor differences can matter and there's only so much a fitter could do to make a bike with a steep steep tube angle and/or long top tube work for me.

I don't say that to make this more complicated than it needs to be for you, but I don't want to overstate what a fitter can do to make a bike that's too big or too small work for someone. In an ideal world, we would get a full fitting before buying a bike, but short of that, try to take each bike out for a long test ride if you can and work with a shop that appreciates that fit is more complicated than simply being to stand over any given bike.