It comes down to competition:
Huerta has been pushed in his UFC fights, but so has Guida and as "The Carpenter" points out, the level of competition he's faced is significantly higher. Guida also stays low, always looking for the level-change, always looking to pressure opponents with wrestling to keep them back up, fending off his attacks. I believe Huerta will be very game but will eventually come up short. Josh Thomson is a better wrestler than Huerta and even he couldn't stop Guida's relentless attacks and top control. It'll be close, but no cigar.