Well not as agile when it comes to running on all fours or up walls or hopping around like cat man. But Cap is definitely faster in combat speed and running speed as well.
He ran 13 miles in a half hour, which means he can casually run at about 26 mph. And that clearly wasn't his top speed. And he's more than agile enough to keep up with Creed. The Quinjet scene for example, or the running explosion scene in Avengers, or infiltrating Batroc's ship.
You're mixing X1 Sabretooth with Origins. Tyler Mane Sabretooth hit him with the tree branch. Origins Sabretooth on the other hand didn't any weapons aside from his claws. And his biggest strength feats are tackling Logan through a wooden wall, throwing him into a bull dozer, and throwing him into a moving truck. And all of that is from the fight where he snaps Logan's claws.
As for him chasing kid Cyclops, he seems pretty agile but that's because he's running around on all fours like a giant cat person. Cap could do the same thing, just has no claws to grip walls and he can't contort like Creed.
Also Creed's stock drops a lot, because as soon as Logan gets his Adamantium, he beats his ass with ease.