No it's not the same.
Jay used one bar. Nas used several to make the same point. sh*t was real weak and watered down the point of even throwing a jab.
it is pretty much the samething. jay z didn't feel 50 was important enough to make a whole song about nor a verse. so, he said what he said. samething with nas. nas didn't use a whole verse. he may of used a few logical and wise bars to lead up to the ending but ultimately it's the same. less important, you get a line or two.
but the point that you called it weak is.. well, is what it is. you just keep contradicting yourself by praising 50 cent disses.
50 will come back and destroy nas