Is Draco a better wizard than Harry? It seems so

It is made very clear throughout the Harry Potter novels just how clever Hermione Granger is. From brewing Polyjuice Potion in second year, to answers all the questions in every lesson, to figuring out before anyone else that Lupin is a Werewolf, to mastering spells and charms before any other student,  to earning "Outstanding" in every one of her OWL courses (and, remember, she took more courses than anyone else) except one (where she accepted an "Exceeds Expectations" in Defence Against the Dark Arts), to successfully performing a Protean Charm in fifth year, Hermione proves time and again that she is the brightest student at Hogwarts.

But what about Draco Malfoy?

We rarely, if ever, get even a hint of how clever he is. And yet, from the small hints that appear every now and again throughout the seven novels, it would appear that Draco is a pretty smart kid. Probably smarter, and a better wizard, than Harry himself.

Evidence?

Five pieces of evidence spring to mind:

1. Draco did well enough on his OWL examinations to appear in NEWT classes with Harry, Hermoine and Ron -- note, it would appear that Crabbe and Goyle were not so successful;

2. Draco is clever enough to figure out, from Montague's adventure in the Vanishing Cabinet, that there is a mate for the Hogwarts cabinet at Borgin and Burkes and that they form a passage between the school and shop, sufficient to allow Draco to introduce Death Eaters to the castle in Book Six -- note, not even Dumbledore appears to have figured this out, although he might not have heard Montague's full story;

3. Draco is clever enough to mend the broken cabinet in the Room of Requirement;

4. Draco holds his own in his duel with Harry in the bathroom on The Half-Blood Prince -- Harry, with all of his experience battling dark forces, teaches a big group of students (including older students) in the DA and yet Draco is able to trade hexes with him for several minutes, including blocking Harry quite adeptly with nonverbal spells; and

5. Draco performs a Protean Charm in sixth year to mimic Hermione's trick with the Galleons for passing messages. As Terry Boot says weakly after Hermione mentions having performed her own Protean Charm a year earlier, 'But that's... that's NEWT standard, that is". When Draco performs the same charm the following year, he is only beginning his NEWT studies so his feat is almost as impressive as Hermione's was.

So, although we don't have his OWL results, we have some pretty strong evidence that Draco Malfoy is one heckuva a smart young wizard, with capabilities that rival, if not outstrip, Harry's.

Draco's Redemption? How can he just walk away?

I wrote some time ago about Draco's redemption. I talked about the scene in Part 2 where Draco and two of his cronies (where's Goyle, by the way? or is it Crabbe who's missing? I can never tell them apart) catch Harry as he searches for the Diadem in the Room of Requirement (Room of Hidden Things version). Confronted, Harry asks Draco why Draco didn't identify him to Bellatrix back at Malfoy Manor (you remember, in Part 1).

The discussion makes it clear that Draco recognised Harry but refused to turn him over to the Death Eaters.

I thought perhaps that this was a sign of Draco's redemption. He couldn't kill Dumbledore. He couldn't turn Harry in. He was actually a decent sort after all.

So what do we make of the fact that, in the final confrontation between Death Eaters and Hogwarts defenders, Draco leaves his schoolmates and joins his parents on the side of evil? Is this simply an indication that Draco is evil but lacks guts? Is he only about saving his own skin?

And what about the fact that Draco and his parents actually abandon the scene even before the final battle plays out?

I can't figure it out. What do you think? Use the comments function to tell me how you interpret all this.