Most probably smartctl displays raw values for SMART attributes and does not interpret them. As for power on hours it is normal for SandForce driven SSDs. The same for media wearout indicator - it shows 0 for raw value but the normalized value is 100. Using dedicated application like Intel SSD Toolbox you would probably see 100% drive health.
You may want to take a look at this document - http://www.intel.com/content/dam/www/public/us/en/documents/product-specifications/ssd-330-specification.pdf starting from page 9.