That doesn't seem to be a list of "support levels", but rather a list of brokenness levels. If a program doesn't work for me, it's of little consolation to know that the failure rate for others is 1% as opposed to 10%.
Support levels would be more like
1) We provide a bug tracker
2) We will help with debugging and mediate bug reports being sent upstream
3) We will fix the bug in-house and provide an updated package