Madison played very well on Sunday. Let's not forget that a cornerback's primary job is to cover, not to tackle. Cornerbacks that can tackle are nice, probably even required in Saban's schemes, but most corners are not good tacklers. Their main job is to shut down the opposing receiver, and Madison has been doing a pretty good job of that this season.
Is Madison a great tackler? No, but he's still better than average in coverage. Daniels is a very good tacker, but he has a lot to learn when it comes to covering NFL receivers. Who is the bigger liability?? (hint, think Steve Smith and Joey Galloway) Same goes for Howard, who by coincidence, is good at neither.
As for the long Pittman run, the corners job is to contain in most instances. Pittman did not run down the sideline, he ran right down the hash. If you want to blame someone for that run, blame JT and Crowder. JT looked lost in the backfield and Crowder got juked in the hole. Madison did his job.