Remember you're not jacking the whole truck up at once.

As bigB said too small of a jack will suck. Most of the 2.5 ton are a nice size for someone to use in the garage at home.

I'm wlling to bet the 2.25 ton jack is REAL small and the base that you lift from is only like 2" round.
But to answer the Q, any of those will lift any corner of his truck.