What he loses in speed and endurance he has gained in experience and strategy.
If you noticed he doesn't leave the table anymore and plays with angles much more than he used to, he's a completely different player to what he used to be 5 years ago.
From a runner that matched Kreanga's speed and power to now the most experienced player on his level, having played with everyone and knowing what works and what doesn't. Nowadays he doesn't really chase the ball, he sets everything up and can somewhat predict, or more correctly, understand what his opponent will do, before they do it.
In other words, he plays with his head more than his body.