From http://www.vectorsite.net/avsu272.html#m4

"As far as the tale about the carrier-based trainer went, the Sukhoi organization had considered a two-seat Su-27 trainer with side-by-side seating, beginning work on the "T-10KM2" in the late 1980s. This variant actually emerged a decade later as a prototype for the "Su-27KUB" two seat trainer, which is essentially an Su-27K / Su-33 carrier-based fighter -- with folding wings, arresting hook, and so on -- mated with a side-by-side cockpit.

The initial prototype was a conversion of an Su-27K / Su-33 and performed its first flight on 29 April 1999, with Pugachev and Sergey Melnikov at the controls. It went on to perform trials on a ground-based ski-jump beginning in September. The prototype featured slightly enlarged wings and tail surfaces.

A side-by-side cockpit arrangement was regarded as more effective for carrier operations training, as it gives the instructor a better view than he would have as a back-seater, an important consideration for "hairy" carrier landings. As the initial Su-27IB / Su-32 prototype was basically a modified Su-27UB with a side-by-side cockpit with few other optimizations, in a sense it could be regarded as having been a demonstrator for the Su-27KUB as well, and Simonov was probably just sounding out interest in the concept, or at the very least trying to keep the T-10KM2 effort alive.

In side profile, the Su-27KUB looks deceptively like a single-seater Su-27, as it retains the standard large radome and the IRST in front of the canopy, through in top profile it more resembles the Su-32 with the side-by-side cockpit. Prospects for production are actually fair, with the type showing potential not merely for training, but in strike, reconnaissance, countermeasures, and tanker roles as well. It has even been considered as a possible airborne early warning aircraft, carrying an electronically steered radar antenna in a spine canoe fairing.

Development of the Su-27KUB is continuing, with a second prototype built and both machines being used to evaluate improved avionics and other kit. There has also been talk of developing an "Su-30K2" variant that features the same two-seat aircraft configuration but with a ground based airframe lacking folding wings, arresting gear, and so on."

So you know much more than anybody of us? Personnaly I don't know very much about F-22. But you know anything about russians aircraft?
If you are, for example, an US pilot who fly on F-22, you must know something about F-22 (I think not all). So you don't know if your plane is better than russians aircraft (I mean Su-35 and of course PAK FA).

I think if soviets made an aircraft better than F-15 in 80', now russians can make one better than F-22 even with less money.

Now for a reality check; The F/a-22 uses airframe stealth which dramatically reduces its flying characteristics (see maneouverability) when compared to modern US aircraft such as the F-16. Airframe stealth only works in certain weather conditions, at certain speeds and when the radar searching for it is on a particular angle from it. Therefore if it is raining, the F/a-22 needs to go faster then Mach 1 or the plane searching for it isn't directly behind or in front then it is not really stealth.

Russia on the other hand has developed some world class ECM suites, radar packages and non-radar tracking means to counter stealth or give them advantages in BVR (Beyond Visual Range) combat. One of the newest developments is the stealth generators that can be plugged onto existed highly maneouvreable aircraft. These aircraft can be more stealthy then an F/a-22 and carry a larger payload, further and still perform better in the resulting dog-fight.