[Dragonlance/Faerun] Anyone here met any Cataclysm/Wall of the Faithless defenders?

[PhoenixPhyre]

What is average about a 20th level fighter with only 10 strength and one feat?

I'm not sure what you mean here.

In 5e (in particular), you can build dexterity-based fighters as well as strength-based ones. And if you're a dex build, you don't need STR for anything really. So it's totally normal to have a 10-STR (or even 8-STR), 20-DEX (hitting the stat cap) high level fighter. And feats are a precious resource--the most you can end up with is 7, if you're a variant human and you give up every single chance to boost your ability scores. So many level 20 characters will have 1 or 0 feats.

But the point was that that's not all that optimized or special of a build. And it can do all sorts of things that, well, stretch credibility. Each one (except for the rate of fire) is not that unusual--there are lots of people who can carry 150 lbs of gear. Not average strength people, at least on earth, but it's not outside human capacity. Running 30' in 6 seconds isn't actually that fast. Doing it in armor, on uneven ground, while carrying 150 lbs of gear is more unusual, but still not superhuman. Doing it while also shooting a heavy crossbow at several multiples of the normal fire rate (which is measured in shots per minute for most cranked crossbows) pushes it well outside the norm. And being able to do it multiple times a day, day after day without ever getting exhausted is not normal either. Basically, the combination of capabilities is unrealistic, despite individual ones being possible (if not plausible).

In essence, D&D has already left realism far in the dust. So adding it back in for female vs male carrying capacity just doesn't give anything useful in my opinion. Or any of the other concessions to "realism" I hear. It doesn't fit the genre or aesthetic. And that's what's important.