Depends on which context you look at. If you stick within the context of the human team only then that's fine, but if you look at the werewolf or the wardancer as well (which are very specialised pieces) then it makes less sense, imo. I think that's a bit different to complaining that your "average" human is the same speed as a similarly armoured "average" elf (high or dark).I have no problem with a human selected for that position being faster than a more heavily armoured blitzer.
Yes, humans have a bit of a high TV issue in MM. Overall they are at the low end of tier 1. None of us know whether 7338 or 8337 or 7337 or whatever will be enough to drag them much closer to 50% overall, so all we really have to argue on is fluff.