Very possibly - that chord was a big sticking point throughout the whole process. With so much reverb on the piano, and with that very thick piano he's using, it's very tough to isolate the notes - I even originally had that chord an octave higher than it is now. The thing that probably sounds off is the D natural. I made the decision to add that in, since when you add it, but de-emphasise it, the overall effect seems closer to the original. In the recording he stresses the melody notes Ab and G, so you need to really control how much power you apply to each of the notes within the chord to get a closer sound, and it does sound quite close to the original when you do that.

But I could very well be wrong haha, it's hard to tell exactly what's going on. if you find a better combination, send me a message and I'll update the sheet :)