No I didn't miss the point, I was just replaying to why the MC percentage was where it was. As far as the poll, I have never seen anywhere near 1/3 of PC be fighters, no where even close. I see all the time at least %20 of a group be Fighter, Paladin or Barbarian, someone has to tank. However in all the games I have been in for a long time we have the first session be a PC build session and 1st level session, so when your group is around the table it goes along these lines "Well, with what player A rolled he can play elf wizard, player B wants to try a monk, C rolled good enough to get a bard, so I will take the tank roll, we could use a little more healing but not all the way so E you always wanted to try a druid, nows a good chance."
We take roles to maximize group effectiveness but fit around what people want to play. I usually pick last because I don't mind playing whatever, that usually means tank in my group. But in every group, even in the stores, its always at least %20 tanks but never 1/3 fighters.