Hi, Rich, welcome to the old geezers' home.
Hmm, good question. You just made me realize I don't associate with many people my own age (54). Occasionally visit a high school chum, he runs a machine shop, some physical work involved. His handshake is strong, but he's a little soft around the waist. Pretty sure I can outlift him, though.
I feel pretty good, but as you guessed, that's after a lot of flexibility/soft tissue/etc work. Also don't load up too much weight too quickly - that's begging for injury.
If you check the threads, you'll notice the people here are very reasonable on weight. A 300 lb bench might bring yawns at a world contest, but here is cause for celebration.
Am I in better shape than a 20 yr old? hard to say. When I was 20, I felt like crap and was weak as a kitten.