Lifting the MRAP like cloneboy did is still a stupid good feat of strength, those weigh between 14-18 tons. X-24 seems to be comparable to Cap in strength.
X-24's a wild and sloppy fighter, so with shield I can see Cap easily taking 8/10 of the fights, maybe even 9. Without shield, probably only 3-4/10. Every cut is going to slow Cap down, while X-24 will just heal from any punch/kick that doesn't insta KO.