Recognizing a song from a radio station

Hello everybody,

I have a little problem: I have two identical Music clips of the Song “Stand up tall” by Ryan Sheridan, the original from the CD and a recording from a radio station (SWR3, Germany). They have the same length, speed, pitch and volume and I created them with the same editing program, but “Echonest” recognizes only the original cut.

WHY???

I have identified the songs with the following line of code:

curl -F "api_key=######" -F "filetype=mp3" -F "track=@Stand up tall.mp3""http://developer.echonest.com/api/v4/track/upload"

Here are the Files:

MP3 Original: https://docs.google.com/file/d/0B2rpsXPx9PGZUVVYRTgwa3ktQmM/edit?usp=sharing

MP3 Radio: https://docs.google.com/file/d/0B2rpsXPx9PGZMm9rc2wtbkU3QW8/edit?usp=sharing

TXT Original: https://docs.google.com/file/d/0B2rpsXPx9PGZSGtwVVZ2SnFIdzQ/edit?usp=sharing

TXT Radio: https://docs.google.com/file/d/0B2rpsXPx9PGZNWJGbjYxSE53aEE/edit?usp=sharing

XML Original: https://docs.google.com/file/d/0B2rpsXPx9PGZTXRVbWxEbkxQTGs/edit?usp=sharing

XML Radio: https://docs.google.com/file/d/0B2rpsXPx9PGZcjJTbDdDeVRrZEE/edit?usp=sharing

ID Original: TRUEMPB13FBD3AC581

ID Radio: TRBBSWH13FBD3CC9FD

Why recognizes “Echonest” only the original?

P.S.: Sorry for my bad English, I’m from Germany.