Just saying, even if they're shorter than females, they won't be short. Given the evidence we have so far, arguing about height at this point is indeed beating a dead chocobo.
Also, small funny thing I noticed - lore says that Viera/Viis live in isolation, the males more so than females...but since there are so many Viis out of Rak'tika, I could gamble 1 out of every 3 leaves the forest. That's a lot of deserters lol