I'm 6'6" with giant hands. I was struggling with a 5-fret stretch for a chord, and thought it couldn't be done. My guitar teacher was a tiny gnome of a man with small hands and stubby fingers, and he played through the same stretch without a problem while showing me something else. I asked him to show me and he said "yeah, it's a bit of a stretch, that one", but it hammered home that it's more about practice than physical limitation.