I agree. Sm Naruto has a few things going for him in this kind of battle- the enhanced speed, durability, and most important of all sensing will allow him to handle Ay's all taijutsu style with relative ease. iirc Naruto has only been hit once while in sm so far, and that was a clone hit by the juubi on purpose to save kakashi.
sidenote- i think naruto in the manga said that the 3rd raikage is as fast as Ay. so he should be able to handle Ay's speed.
but the most important thing he's got going for him is that wind is strong against lighting. as he will need rasenshuriken to defeat Ay's raiton armour, and it will work as Ay's raiton armour is weaker than the 3rd and the 3rd raikage still lost his chakra cloak and suffered superficial damage when he ate a Frs anyway. which means he would have died from his chakra vessels being cut, despite not being torn to pieces. I think Ay would be able to dodge an Frs pretty easily, however Naruto can expand it in Sm which might catch Ay off guard, he can disguise clones to catch him off guard, use a combination of smoke bombs and sensing, or he could simply not throw it and attack directly with a clone. and the sage toads have certain capabilities which work as well like the sound genjutsu and that paralyzing frog call.
that said, Naruto as he was when he fought pain would lose as he simply can't hold sm for long enough and Ay would destroy him when he tries to reverse summon a clone. Now that Kurama's cooperating however he should be able to merge with the toads and stay in sm indefinitely, plus he enters sm instantly now.