I don't think he was asking about block-or-better in that last post. To clarify:

Block-or better: You get paid the HIGHER of the actual or scheduled flight time. This is good, but not all airlines have it. If you complete the leg in less time than scheduled block, you still get paid at least the scheduled value.

Scheduled Block: You get paid ONLY the scheduled block (or possibly an historical average to account for seasonal variations). This is usually bad. It might be OK if it were a true and correct yearly average, but the companies which use this system usually throw out "statistical anomalies" when calculating average block. A statistical anomaly would be deicing, holding, flow delays, etc.

Some airlines also pay a Duty Rig, typically 1-for-2. This means that if you are on duty for 12 hours, you will get paid AT LEAST 6 hours (1 hour pay for every 2 on duty). If you fly less than six hours, you still get paid 1 hour for every 2 on duty. If you actually fly more than 6 hours in the 12 hour period, you get paid what you flew. Airlines which don't have a duty rig are usually bad news.