Terri Schiavo was a healthy woman who suffered a brain injury from a seizure.
Coleman had chronic kidney disease, and spent years on dialysis or medicines to stop rejection of a kidney transplant. Often this means high blood pressure that damaged the heart and other organs, and might have been behind the stroke.
Schivo had an injury that was impossible for docs to estimate if she’d recover or not. She was killed later, even though she had recovered and was probably not PVS.
I suspect Coleman’s MRI showed a major bleed in his brain; if he didn’t die he would have spent years disabled. Brain surgery in this case has a small chance of recovery, but often the person dies after a few days, from cerebral edema.
Finally, I suspect Coleman either had a “living will” or had talked to his wife and family on what to do if he had a major stroke or heart attack.
Removing machines from a person who has only a small chance of recovery, is a bit different than starving to death a helpless handicapped woman.
I'm not real impressed with her attitude about it, though. Oh well.