Well, let’s see. Okay, so as we know, Bucky was born in 1917 and Steve was born in 1918. So, chronologically, Bucky just turned 100 this year, and Steve will turn 100 next year.
But biologically, thats a different story.
Steve went into the ice in 1945, shortly after Bucky fell, and Bucky fell right before his birthday that year.
So, with that in mind, that means when Steve and Bucky died the first time, Bucky was 27, with Steve being 26.
Steve was found in 2011, 66 years after he went in the ice, and thus resumed bioligcal aging.
With that in mind, as of right now, he would be about 32.
(I say about 32, because if you go off the date he was found, and resume from there, he may be biologically younger by a few months, if he was found after his birthday.)
Bucky, though, is another story. We have no idea how long he was left in cryo each time, or how long he was out for.
So, with that in mind, he could be a couple extra years older than Steve, or even a couple decades. But, scientifically, since they both age at an extremely slow rate, it probably doesn’t make as much of a difference.
Every time I see this, I think about Tony complaining about the coffee grounds in the disposal, and I blame Steve, and I think Tony knows it was Steve b/c he makes the “biker gang” comment, and I live for that kind of passive aggressiveness on both sides.