I lived worked in Dubai for about 6 months last year and saw the Fortuner and Prado EVERYWHERE!
It took me a while to figure out, but the Fortuner is the same chasis, I believe, as the Lexus RX. It only comes with their small 3.0L V6 and is small comared to the 4R. While I like it's looks, I'd rather have a Prado/4R. It won't be the next 4R, I would expect the 4R to keep it's size based on all the other Toyota SUV's in the line up. I just don't see it really getting any larger or smaller.