And how in the world is that supposed to be possible?
Let's say we top out at a Dex score of 36. That's +13 AC from Dex alone, +4-5 from Mage Armor/Bracers.
How could a strength build possibly compete? You can slap some +2 plate on there, and maybe a tower shield, I guess? But... eh, that's neither very roguish nor thuggish, is it?
Focusing Dex over Strength gives you, say, an extra +2, maybe +3 AC. Another 5 points from levelling grants you another 2-3. So it's about 6 AC at the most, unless you're
really desperate for attribute points.
Everything else can be done exactly the same on a Strength build. Also, with the feat you save from not getting Weapon Finesse, you could get Dodge, which lessens the gap between the two.