IDK how accurate this is since I've never seen more than 13 White Walkers (though Craster's sons would have to give considerably more than that). The dead foot soldiers have gone down pretty easily in the past and this means the human army is outnumbered almost 3 to 1 (though there will also be the odd undead animal/giant and White Walker tipping the scales even more). There's also the fact that everyone who dies joins the wight army.
The only thing the living have going for them are two dragons to the WWs one. If everyone is outfitted with dragon glass, I can buy most taking at least 3+ wights each and the dragons taking out tons (unless each WW has that god tier throwing arm the NK does). Plus, if they get a WW, they get its ever wight it's ever brought back. They are at a disadvantage, but it doesn't look impossible.