It would be a good question to ask at Paris if one can get past the FSB minders and the Armenian gangsters. What the Su-35 brings to the party is 3D vectoring and integrated flight/propulsion control, which allow them to dump the canards (which imposed a speed limitation) and the airbrake (saving weight and volume).
Now back in the late-80s/early-90s there was a flurry of interest out of WPAFB in "agility" as an add-on quality to "maneuverability". Some defined the latter as being a matter of limits and sustained g/speed/altitude envelope, while "agility" was the ability to go from one maneuver state to another under full control. That was the root of the X-31 program, the Herbst maneuver (which is not something that you use when someone is choking)...
Herbst maneuver - Wikipedia, the free encyclopedia
... and a few other things.
Maybe the Rooskies take the view that the Su can blast out of a low-speed state so quickly that "thou shalt not lose thine energy" is no longer a commandment.
And as they were the first to have HMS and HOBS missiles (R-73) - which in the real world have sub-hemispheric coverage - I wonder whether giving you more shot opportunities is the idea.