Brad, thank you for the video. The sound is indeed quite similar. I remember an old boss who used to say, "It's not enough to be, you have to appear!" The tuning is correct, but when I play simple songs from Suzuki Method's book 1, the notes E5 and E5b sound very strange to me and to those I invited to listen. I even went to a musical instrument store in my town and played another piano of the same model as mine, and I confirmed that it's indeed the sound of the piano's sample, not an issue with my piano itself.
I challenge anyone to play "Twinkle, Twinkle, Little Star" or any simple song from the Suzuki book using headphones and think it sounds normal. It might be technically correct, but it doesn't sound right. This situation bothers me so much that I have decided to put the piano up for sale.