Its not as easy as youd think to break that 200bhp mark in something so small and dated. You can argue that the B16 can do it, and its true, it can, but it has to do it with HUGE high cam specs that wouldnt allow proper idel anywhere near 700-800rpm... something that the 4AG doesnt have the technology to support.
Now other larger engines that can make the power stock, make it at some rediculous RPM, and make garbage for torque.
Some engines, mainly Nissan and GM (KA24, Quad, TC, Eco, Iron Duke) that are stroked to high hell are very difficult to hit that mark. They can make 200lb-ft without blinking, but struggle to hit that highpower because of the stroke. Think of a 283, stroked to 302... cut that in half, and thats what youre dealing with lol. When pistons cover 4.700" 12,000 times a minute (6000rpm), suddenly... grams matter. I once figured that at 4.700" (94mm), running at 6000rpm, a piston travels from 0-143mph-0 in .005 seconds... the stresses are rediculous. If you take 30 corvettes, stacked them up, then balanced them all on a $10 roll of Quarters... the pressure that is applied to the bottom quater in the roll, is about equal to what a wrist pin sees at 6k in a engine with a stroke as such.