So if you run a Full Court Press, couldn't you lower the rebounding difference by having a strong or stronger rebounding team than the opponent?
Nachtmahr, the renowned German expert in all things to do with shot blocking, believes that you can afford to give up the rebounding in favour of higher shot blocking. As well as higher steal stats, fcp gives you more blocks, and Nachtmahr believes you can block (or force a miss) enough shots that the extra ORs won't matter. If I'm misremembering what he said then I apologise to him.
I'm not altogether sold on that having seen just how many ORs you can give up playing fcp but certainly more SB is a benefit.
In lower divisions of course, you should be able to have greater rebounding and at least get close to your opponent's totals. I work it out as needing 10% more to achieve a level playing field. So (forgive me for stating the obvious) if your opponent has 10, you want 11.
On a slightly unrelated point, steals aren't really what you want to look at. Opponents' turnovers are all that matters. Even if your opponent throws the ball out of bounds, you still have to regard that as a success for the press.