On the contrary, I recently picked elise into a nasus. I would poke the hell outta him, then he would walk over and doink one minion and be back to full health. So then I tried going all in after throwing my harrass out at him. He then withered me and doinked me back to full health while I slowly retreated and hung my head in shame.
I can honestly say that I have only seen one nasus lose a lane In the last couple weeks and it was against a jax. Methinks I need to finally buy jax.
Ive been saying that nasus is freelo forever. the problem is that he scales so damn hard while being an immovable beast with tanky items. I'm 40-22 with nasus in ranked this season and i can honestly say i've lost lane maybe 5 times in all those matches, and only 2 or 3 were stupid plays as opposed to getting camped (which is smart of the opposing team, shut nasus down early or lose). typical nasus loss for me usually involves the rest of my team going 3-15 in laning phase and not even giving us a chance to win mid/late
even champs that can do alright against nasus dont tend to be as valuable lategame cause of his scaling, and they tend to underestimate him from levels 6 onward. I can't even count how many times I've had people try to harass me, I give a few Qs, then wait for them to come in and just all in them and they die easily while i walk away with over 50% health.